Band 7+ vocabulary: why collocations beat memorising word lists

Vocabulary · 5 min read

Most candidates try to raise their vocabulary score by memorising long lists of "advanced" words. It rarely works — and examiners can tell. The faster route to a higher Lexical Resource band is learning collocations: the word partnerships that native speakers use without thinking.

What is a collocation?

A collocation is two or more words that naturally go together. You make a decision (not "do" a decision). Rain is heavy (not "strong"). You take responsibility, pay attention, and reach a firm conclusion. Each pairing is a small, fixed chunk — and using the right chunk is what makes your English sound fluent and precise.

Why examiners reward them

The IELTS Lexical Resource descriptors explicitly mention "collocation". At Band 5, candidates have enough vocabulary for familiar topics but make frequent errors. At Band 7, the descriptor says the candidate "uses less common and idiomatic vocabulary" and "shows some awareness of style and collocation". In other words: you don't reach Band 7 by knowing rare words — you reach it by combining ordinary words correctly and naturally.

"It would make a big difference" sounds Band 7. "It would do a big variation" uses a fancier-feeling word but breaks the collocation — and drops the score.

High-value collocations by topic

Learn collocations in topic clusters so you can deploy them in both Speaking and Writing:

• Environment: mitigate the effects, sustainable development, a detrimental impact, conserve resources.
• Technology: cutting-edge innovation, become obsolete, raise productivity, bridge the digital divide.
• Education: a well-rounded education, foster creativity, meet the needs of students, rote learning.
• Society: address inequality, a vibrant culture, pose a serious threat, strike a balance.

How to actually remember them

Word lists fail because cramming ignores how memory works. The fix is spaced repetition: you review each item at the exact moment you're about to forget it, so it moves into long-term memory with far fewer reviews. This is the principle behind algorithms like SM-2 and FSRS — the same systems that power serious flashcard study.

A practical routine: learn collocations as chunks (front: the phrase, back: meaning + an example sentence), review daily, and grade yourself honestly so the algorithm can schedule the hard ones more often. Always store the example sentence — you remember "a great way to unwind" far better than the bare word "unwind".

Related: IELTS Speaking Part 2 — a 4-step method to ace the cue card.