IELTS vocabulary by topic

Lexical Resource is one of the four equally-weighted IELTS Writing and Speaking criteria, so it directly controls a quarter of your section band. Band 7 Lexical Resource requires precise vocabulary used with style and an awareness of collocation; band 8 requires consistent precision plus less-common items used naturally; band 9 requires full operational lexis with no errors. Memorising single words rarely lifts the band on its own; using them in correct collocations and registers does.

Band 6 vocabulary is broadly accurate but uses everyday words and shows clear repetition. Band 7 vocabulary uses less-common items, uses collocations correctly more often than not, and shows topic-specific precision (industry-specific verbs, evaluative adjectives, abstract nouns). The fastest route from 6 to 7 is not learning more words, it is replacing 5 to 10 high-frequency words per essay with topical equivalents you can use without error.

Most band-7 candidates have an active English vocabulary of around 4,000 to 5,000 words plus 200 to 300 topic-specific items for the four highest-frequency IELTS prompts. Quality of recall beats raw memorisation: 10 to 15 words made active per chosen topic outperforms 30 passively recognised words. The 700+ words across our 23 topic and function pages are curated specifically for IELTS prompts and band-7 use.

Work, Education, Environment and Technology are the four highest-frequency IELTS Writing Task 2 and Speaking themes in 2026, so prioritise those topic pages first. After that, function pages (linking words, collocations, academic phrases) transfer across every prompt and lift Coherence and Cohesion in parallel with Lexical Resource. Cover a function page before a fifth topic page.

Most universities in the UK, US, Canada, Australia and New Zealand require an overall IELTS Writing band of 6.0 to 7.0 (Lexical Resource is one of the four sub-scores). Canada's Express Entry CLB 9 requires Writing 7.0 and Speaking 7.0, so each sub-score (Lexical Resource included) has to average to a 7.0 task band. Australia's Department of Home Affairs awards Proficient English points at IELTS 7.0 in every section and Superior at 8.0. See the IELTS score requirement by university for the verified Writing minimum at your target institution.

Three habits: (1) build a 5-word topical lexicon for every Task 2 essay before you start writing, so the band-7 vocabulary lands naturally inside arguments rather than feeling forced; (2) use collocations rather than isolated words: not 'a big problem' but 'a pressing issue', not 'a good answer' but 'a viable solution'; (3) check yourself with the AI IELTS Writing checker, which flags repeated or vague words with stronger alternatives and shows you exactly which sentences are capping your Lexical Resource band.