“Similarly” and “however” are useful words, but they can hide how two ideas are actually related.
The broader eduKateSG guide, Vocabulary for Junior College (JC1–JC2): Adult Thinking, Professional Writing, treats vocabulary as relationship control. Comparison vocabulary is therefore not about avoiding repetition; it is about naming the exact relationship.
Comparison needs a criterion
Two policies can be similar in cost but different in fairness. Two writers can agree on the problem but disagree on the solution. Strong comparison states the dimension being compared.
- Similarity: analogous, comparable, parallel, convergent
- Difference: distinct, divergent, contrasting, asymmetrical
- Degree: more pronounced, less substantial, broadly similar, marginally different
- Qualification: similar in principle but different in application
Convergence and divergence are richer than same and different
Two views converge when they move towards a shared conclusion or concern. They diverge when they separate on an assumption, priority, mechanism or recommendation.
For example, two passages may converge on the risks of misinformation yet diverge over whether government regulation or platform self-governance is the better remedy.
Analogous does not mean identical
An analogy says two situations share a relevant structure. It does not claim they are the same in every respect. A strong writer states both the useful similarity and the point where the analogy breaks down.
Use comparison verbs
- mirrors
- resembles
- parallels
- contrasts with
- differs from
- exceeds
- falls short of
- shares the assumption that
These verbs tell the reader what kind of comparison is being made.
A comparison paragraph should answer four questions
- What is the shared criterion?
- Where do the items converge?
- Where do they diverge?
- Why does that difference matter?
The final question turns comparison into analysis.
Worked example
Weak: “Singapore and another country both regulate online harms. However, their systems are different.”
Stronger: “Both systems recognise platform responsibility, but they diverge in the degree of state intervention and the threshold for mandatory action. That difference matters because it changes the balance between rapid enforcement and procedural safeguards.”
The vocabulary exposes the dimensions of comparison.
Comparative judgement is not description
Once the similarities and differences are clear, the student must decide which are relevant. A difference may be real but trivial. A small structural difference may explain a large outcome. Vocabulary such as material, substantive, marginal and decisive helps weight differences.
What mastery looks like
A strong JC writer can compare by criterion, distinguish analogy from identity, describe degrees of difference and explain why a particular convergence or divergence matters to the argument.
Comparison Lab: Compare Like With Like
Strong comparison begins before the connector. The writer must decide which dimension is being compared and make sure both sides are being judged on that same dimension. Otherwise, the paragraph may contrast a strength of one option with a weakness of another and call the result analysis.
The Apples-to-Apples Rule
If comparing education systems, choose a common criterion: accessibility, attainment, equity, teacher autonomy or resilience. If comparing policies, use the same outcome, time horizon and population where possible. A fair comparison controls the frame before drawing a conclusion.
Comparison Relationships Beyond Similar/Different
- Analogous: shares a relevant structure despite surface differences.
- Parallel: develops in a comparable direction or pattern.
- Asymmetrical: the relationship or effect is unequal across the two sides.
- Convergent: moves towards a common conclusion.
- Divergent: separates on a cause, value or remedy.
- Incommensurable: difficult to compare directly because the criteria differ.
Analogy Needs a Break Point
A useful analogy identifies both the shared structure and where the comparison stops working. “Social-media platforms resemble traditional publishers in exercising editorial influence, but the analogy weakens because platforms operate at vastly greater scale and often rely on automated recommendation.” The break point protects the analogy from overreach.
Worked Comparison: Exams and Coursework
On comparability, standardised examinations may be stronger. On breadth of demonstrated skill, extended coursework may capture processes that timed exams miss. On authentication, each has different vulnerabilities. A mature conclusion does not ask which is simply “better”; it asks which mix best satisfies the relevant criteria.
Weight the Difference
Not every difference matters equally. Use marginal, material, substantive, decisive and negligible to show how much the difference changes the conclusion. This prevents a list of contrasts from masquerading as evaluation.
Cross-Passage Comparison Drill
- Write the shared question both passages answer.
- Identify one common criterion.
- State where the writers converge.
- Name the exact point of divergence.
- Explain why that divergence changes the reader’s judgement.
Comparison Checkpoint
- Am I comparing the same dimension?
- Is the analogy structurally relevant?
- Have I stated where the analogy breaks?
- Is the difference material or merely visible?
- Does the comparison lead to a judgement rather than a list?
Comparison becomes analytical when it clarifies what matters. The goal is not to produce more similarities and differences; it is to discover which relationship changes the argument.
For the full JC vocabulary system, return to Vocabulary for Junior College (JC1–JC2): Adult Thinking, Professional Writing.