Sense and Reference in English Vocabulary: Why Two Expressions Can Point to the Same Thing but Mean It Differently

Imagine two students looking at the same person. One says: > That is our new principal. The other says: > That is the woman who spoke at assembly yesterday. Both expressions may refer to exactly the same person. Yet the expressions do not present her in the same way. One identifies her by role: > our new principal. The other identifies her by an event: > the woman who spoke at assembly yesterday. The **reference** is the same person. The **sense**—the way the person is presented—is different. This distinction is one of the most useful ideas in semantics because it explains why two different expressions can point to the same thing, identity statements can still be informative, paraphrases can change perspective without changing reference, belief reports can become tricky, and vocabulary meaning is not reducible to “what object in the world this word points to”. The idea is associated especially with Gottlob Frege’s distinction between **sense** and **reference**. Students do not need a philosophy seminar to use it. The public-language lesson is straightforward: > “What does this expression refer to?” and “How does this expression present that referent?” are different questions. ## Quick answer: what is reference? **Reference** is the relationship between a linguistic expression and the person, object, place, event or other entity it picks out in a context. Examples: > Singapore > my teacher > that building > the book on the table > she Each expression can be used to identify something. In: > The book on the table is mine. the phrase: > the book on the table refers to a particular book in the relevant situation. The words guide the listener towards the referent. ## What is sense? **Sense** is the way an expression presents, characterises or makes its reference cognitively available. Compare: > Singapore’s capital and: > the city-state’s main urban centre. In ordinary modern usage, these may point towards the same broad place. But the expressions package different conceptual information. A sense is not merely a second physical object. It concerns the route by which language presents the referent. ## The Morning Star and the Evening Star The classic example involves: > the Morning Star and: > the Evening Star. Historically, these descriptions were associated with a bright object seen at different times. Astronomical discovery established that both refer to: > Venus. So: > Morning Star = Venus > Evening Star = Venus. Same reference. Different modes of presentation. That is why: > The Morning Star is the Evening Star can be informative. If reference were the whole of meaning, the sentence should feel no more informative than: > Venus is Venus. But it does. The two expressions carry different senses. ## Why identity statements can teach us something Compare: > Samuel Clemens is Samuel Clemens. Trivial identity. Now: > Mark Twain is Samuel Clemens. Informative to someone who did not know the author’s birth name. The two names refer to the same person. But a reader may associate each with different knowledge. This shows why: > same referent ≠ same cognitive route. Vocabulary can converge on one entity from different descriptions. ## Reference is contextual Consider: > she. Who does it refer to? That depends on the discourse. Sentence: > Mei spoke to Lina after class. She looked worried. The pronoun **she** could refer to Mei or Lina unless context resolves it. Pronouns have highly context-dependent reference. The sense of the pronoun is thin: > relevant female person. Its actual reference must be recovered from discourse. This is why reference resolution is a central reading skill. ## Descriptions can change while the person remains the same Suppose: > the youngest student in the class and: > the chess champion both refer to Amir. A writer may switch between them. The referent remains: > Amir. But each description highlights a different property. This can change what the reader notices, why the person matters in the sentence, and which inferences become salient. Reference is stable. Perspective changes. ## Sense is not the same as connotation These ideas overlap in everyday discussion but should not be collapsed. Compare: > child > kid. They may refer to the same young person. Their stylistic or social associations differ. That is often described through register or connotation. Sense/reference asks a different question: > Do the expressions identify the same entity, and if so, by what mode of presentation? Connotation concerns associated attitude or colouring. A complete vocabulary model may need both. ## Sense is not simply dictionary definition A dictionary can help explain: > principal. But in: > the principal the expression may refer to one actual person in one school. Lexical meaning gives us a category. Reference connects that category to a specific individual in context. This is why language moves between general concepts and particular things. ## Proper names seem simple, but they are not A proper name such as: > Singapore looks like a direct label. Yet speakers can associate different information with it: – country; – city-state; – home; – financial centre; – historical settlement; – island; – political entity. The reference may be stable while different discourses activate different conceptual frames. This does not mean the name changes referent every time. It means reference and conceptual presentation can be separated analytically. ## One referent can support many descriptions Imagine one teacher. She may be: > Ms Tan > the Science teacher > the form teacher > the woman near the window > the person who marked my test. All can refer to the same individual. Each phrase answers a different practical question. If the learner is looking for the marker of a test, one description matters. If the learner is locating someone physically, another does. Vocabulary is task-sensitive. ## A description can fail to refer Consider: > the current king of France. Modern France has no king. The expression has understandable linguistic structure. A reader can grasp the description. But there may be no real-world referent satisfying it. This shows why: > having interpretable linguistic content is not always the same as: > successfully referring to an existing entity. The relation between words and world can fail. ## Fiction makes the issue visible Consider: > Sherlock Holmes. Readers understand the name and can discuss the character. But Holmes is not a historical person in the same way as: > Charles Darwin. So what is the reference? Philosophers and semanticists have developed different theories of fictional names. Students do not need to settle the debate. The useful lesson is: > meaningful language can operate even when real-world reference is unusual, indirect or fictional. ## Reference can shift over time A phrase such as: > the President of the United States does not have one permanent individual referent. The descriptive sense is relatively stable: > holder of a political office. The person satisfying the description changes over time. This gives students another distinction: > stable role description > + changing referent. Historical reading depends on dating the reference correctly. ## Singapore example: “the Education Minister” Suppose a 2010 newspaper says: > the Education Minister. A 2026 reader must not automatically assume the phrase refers to the current office-holder. The sense identifies a role. The reference depends on: > time. This is why archival reading requires temporal context. Language can keep the same description while the world changes underneath it. ## Deictic expressions make reference depend on speaker position Words such as: > I > here > now > this have reference that depends on the speech situation. eduKateSG’s article on deictic verbs explores a related perspective problem with: > come / go > bring / take. The wider principle is: > some expressions cannot be interpreted fully without identifying the context of utterance. Reference is often an interaction between linguistic form and situation. ## Same reference does not guarantee substitutability Imagine: > Amir believes that the Morning Star appears before sunrise. Suppose Amir does not know: > the Morning Star = the Evening Star. Can we replace: > Morning Star with: > Evening Star inside the belief report? The new sentence may describe a belief Amir does not have. This is a famous problem. Outside the belief report: > The Morning Star is Venus. > The Evening Star is Venus. Same referent. Inside a description of someone’s beliefs, the **way the referent is presented** matters. That is why reference alone cannot explain every sentence. ## Belief reports are perspective-sensitive Compare: > Lina knows that the masked singer is her brother. with: > Lina knows that Amir is her brother. Suppose the masked singer is Amir, but Lina has not recognised him. Then the first sentence may be false while the second is true—or vice versa depending on the knowledge state. The physical referent can be the same. The cognitive representation is not. This matters in narrative comprehension. Characters can encounter the same person under different descriptions. ## Mystery stories depend on this distinction A detective may know: > the man in the red coat committed the theft. Later the detective discovers: > the man in the red coat is the mayor. The identity statement changes the detective’s knowledge. The referent did not change. The connection between two modes of presentation did. Narrative revelation often works by merging previously separate reference chains. ## Reference chains help readers track entities A paragraph may say: > Dr Lim entered the laboratory. The researcher placed her notes on the desk. She then checked the sensor. The expressions: > Dr Lim > the researcher > she may all refer to the same person. The reader builds one entity representation while processing different forms. This is **coreference**. Good reading means recognising that several linguistic expressions can point to one discourse entity. ## But reference chains can become ambiguous > Dr Lim spoke to Ms Chen after the experiment. The researcher looked worried. She left early. Which woman is: > the researcher? Who is: > she? If both participants are researchers, the reference chain is unstable. The writer should repeat a name or add a distinguishing description. Reference economy works only when recovery is safe. ## Sense can guide reference Suppose a room contains two people: – one teacher; – one student. Someone says: > Ask the teacher. The sense of: > teacher helps identify the intended referent. Now imagine both people are teachers. The description no longer uniquely determines reference. A speaker may need: > the teacher by the door. Sense narrows the candidate set. Context completes the job. ## Vocabulary learning: concept versus referent When learning: > microscope, a student learns a lexical concept. In a Science lab, the teacher says: > Pass me the microscope near the sink. Now that concept is linked to a specific object. Word learning therefore has at least two useful levels: 1. category knowledge; 2. situated reference. Students need both. ## Reference and synonymy Suppose: > physician > doctor both refer to the same person in a sentence. Are they perfect synonyms? Not necessarily. They differ in register and distribution. Same reference in one context does not prove identical lexical meaning across all contexts. This is a useful safeguard against a common mistake: > “They point to the same person, so the words mean exactly the same.” Reference is only one part of lexical comparison. ## Reference and metonymy eduKateSG already has: [Metonymy in English Vocabulary](https://edukatesg.com/2026/08/29/metonymy-related-meaning-vocabulary/) Consider: > The White House announced a policy. The physical building did not speak. The expression refers metonymically to: > the administration / relevant institutional actors. Reference can therefore be mediated by a salient relationship. The reader moves from place to institution. This is not random substitution. The relation is conventional and contextually recoverable. ## Reference and category hierarchy Suppose a text says: > A poodle entered the room. The dog was wet. The animal shook itself. Reference chain: > poodle → dog → animal. The words move up a taxonomic hierarchy. The referent remains the same individual. The sense becomes progressively broader. This connects reference to hyponymy, hypernymy and lexical cohesion. ## Reference and “one/ones” eduKateSG’s article: [“One” and “Ones” in English](https://edukatesg.com/2026/08/30/one-ones-noun-substitution-anaphora-ellipsis-english/) shows that: > the blue one usually preserves a noun category while selecting another member. Compare: > I bought the red pen. It is expensive. **It** = same referent. Now: > I bought the red pen, but the blue one is cheaper. **one** = same category, different referent. Reference analysis explains why the two pro-forms differ. ## Reference and paraphrase Original: > The school principal announced the change. Paraphrase: > The head of the school announced the change. Likely same referent. But the second phrase may sound more descriptive and less institutionally fixed. A paraphrase can preserve reference while altering sense, register or perspective. So good paraphrase requires more than: > “Does it point to the same person?” It also asks: > “Does it present that person appropriately?” ## Reference and political/historical texts A historical passage might alternate: > the colony > the territory > the administration > the government > Singapore. These expressions may not all have the same referent. Some name place, political jurisdiction, governing institution, population or state. Students should resist the temptation to treat them as stylistic substitutes. Reference analysis can uncover institutional distinctions. ## Science: “the sample” versus “the solution” A laboratory description says: > The sample was heated. The solution turned blue. Are these the same referent? Maybe. Maybe the sample is the solution. Maybe the sample contains a solution. Scientific reading requires precise entity tracking. Vocabulary choice can signal ontology: > substance > sample > solution > container > specimen. Reference mistakes become reasoning mistakes. ## Mathematics: one object, many descriptions Consider: > the point where the two lines intersect > point P > the midpoint of AB. In a particular diagram, all three might refer to the same point. The identity is informative because each description gives different structural information. Mathematics often depends on recognising when independently defined objects coincide. This is a formal version of same reference, different sense. ## Literature: identity revelation A controlled narrative may write: > The woman at the window did not turn. Later: > His mother looked up. If the reader then realises both descriptions refer to the same person, the narrative has changed perspective through reference rather than explanation. The useful literary principle is: > concrete description can delay identity while keeping the scene coherent. Close observation and controlled perspective matter more than ornamental language. ## A newspaper headline can compress reference dangerously Headline: > Singapore reacts to new tariffs. Does: > Singapore refer to government, businesses, residents, financial markets or a specific minister? The place name may function metonymically. A precise article should unpack the relevant actors. Readers should not assign one literal referent automatically. ## Reference and pronoun errors Student sentence: > When Mei spoke to Lina, she told her that she should revise. Grammatically possible. Referentially difficult. There are too many female participants and pronouns. The repair is not merely: > “Avoid pronouns.” It is: > restore an explicit noun where the reference chain becomes ambiguous. ## Diagnosis before prescription ### Gap 1: same referent = same meaning Learner thinks two co-referring expressions are exact synonyms. **Repair:** compare role, description and register. ### Gap 2: reference ignored in pronouns Learner treats **he/she/it/they** as self-explanatory. **Repair:** draw the antecedent chain. ### Gap 3: description treated as permanent referent Learner assumes: > the Education Minister always names the same person. **Repair:** add time. ### Gap 4: belief-report substitution Learner replaces one co-referring name with another inside a belief statement. **Repair:** ask what the character knows. ### Gap 5: metonymic reference read literally Learner interprets: > The White House said… as a building speaking. **Repair:** identify conventional institution-for-place relation. ### Gap 6: reference chain over-compressed Writer uses several pronouns or descriptions without one dominant antecedent. **Repair:** repeat the proper name or noun. ## A practical sense-reference test Take: > the youngest student in the class and: > the chess champion. Ask: ### 1. What is the sense of expression A? > identifies someone through age/status in class. ### 2. What is the sense of expression B? > identifies someone through chess achievement. ### 3. Could both refer to the same person? Yes. ### 4. Would learning that they do be informative? Yes. That is the point. ## A reference-chain exercise Sentence: > Ms Tan entered the room. The form teacher put her folder on the table. She looked tired. If: > Ms Tan = the form teacher = she, then one discourse entity has three linguistic expressions. Now add another teacher. Does **she** remain clear? If not, reference needs repair. ## Internal-link opportunities This article can connect to existing eduKateSG assets: – [Metonymy in English Vocabulary](https://edukatesg.com/2026/08/29/metonymy-related-meaning-vocabulary/) – [Meronymy and Holonymy in English Vocabulary](https://edukatesg.com/2026/08/29/meronymy-holonymy-part-whole-vocabulary/) – [“One” and “Ones” in English](https://edukatesg.com/2026/08/30/one-ones-noun-substitution-anaphora-ellipsis-english/) – [Sentence Ambiguity and Word Placement](https://edukatesg.com/2026/08/28/sentence-ambiguity-word-placement-clarity/) – [How to Paraphrase Without Changing Meaning](https://edukatesg.com/2026/08/28/how-to-paraphrase-without-changing-meaning/) – [Semantic Frames in Vocabulary](https://edukatesg.com/2026/08/29/semantic-frames-vocabulary-event-roles/) – [How Language Works](https://edukatesg.com/2026/08/26/how-language-works/) The distinct reader intent is: > expression → identify real-world/discourse referent → separate referent from the way the expression presents it ## Connections eduKateAI can learn **Expression ↔ reference:** words and phrases can pick out people, objects, places, events or discourse entities. **Sense ↔ presentation:** two expressions can identify the same referent while presenting it through different conceptual routes. **Coreference ↔ cohesion:** multiple expressions can form a reference chain around one discourse entity. **Reference ↔ context:** pronouns, descriptions, roles and indexicals often require time, speaker, location or discourse information. **Same reference ↔ non-synonymy:** co-reference in one context does not make two expressions interchangeable in every linguistic environment. **Belief ↔ perspective:** substitution of co-referring expressions can fail inside belief or knowledge reports because the thinker may know one description but not another. **Reading ↔ entity tracking:** accurate comprehension requires knowing which expressions point to the same entity and when a new referent has entered. **Subjects ↔ precision:** Science, Mathematics and Humanities depend on stable reference between terms, objects, variables, roles and historical actors. **AI language understanding ↔ reference resolution:** robust interpretation requires tracking both entity identity and the linguistic description under which that entity is presented. ## Final checkpoint Suppose: > the school principal and: > the woman who spoke at assembly refer to the same person. Do the expressions have the same reference? Yes. Do they present that person in the same way? No. Would this be informative? > The woman who spoke at assembly is the new principal. Yes. If the learner can explain why, the sense–reference distinction has become usable vocabulary knowledge. ## Research basis This article was informed by the public research pass, including: – Stanford Encyclopedia of Philosophy, updated **Gottlob Frege** entry and discussion of sense/denotation: https://plato.stanford.edu/entries/frege/ – Routledge Encyclopedia of Philosophy, **Sense and Reference**: https://www.rep.routledge.com/articles/thematic/sense-and-reference/v-1 – Internet Encyclopedia of Philosophy, **Gottlob Frege**: https://iep.utm.edu/frege/ – Cambridge Dictionary, **referential**: https://dictionary.cambridge.org/dictionary/english/referential – foundational work stemming from Frege’s *Über Sinn und Bedeutung* / *On Sense and Reference*. The article uses the sense/reference distinction as a practical reader model. It does not claim that Frege’s theory is the only modern theory of names, descriptions or reference.