A learner showed me her practice Task 2 essay recently, and it opened like this: "Many people think big cities get lots of problems when they grow fast. Studies show that traffic is the biggest one."

Her grammar was sound and her ideas were clear, but her vocabulary was working against her: think, big, get, lots, show — the everyday words we all lean on in conversation, and exactly the words that flatten an essay's tone. When we rebuilt those two sentences together using words from the Academic Word List, the same ideas suddenly carried academic weight: "It is widely argued that major cities face serious challenges as they expand. Research indicates that traffic congestion is the most significant issue."

Notice what changed. Not one grammar point moved. The verbs became more precise (face, expand, indicate), the adjectives became more measurable (major, serious, significant), and the register shifted from chat to essay. That is precisely what examiners reward — and it comes from knowing a modest set of high-frequency academic words deeply rather than a thousand words shallowly.

The List Behind That Upgrade

The Academic Word List (AWL) is one of the most widely used vocabulary lists in English teaching. It was compiled by analysing a large collection of university textbooks and academic articles spanning many subjects — arts, law, science, business, and more — to identify the 570 word families that recur across almost all of them. These are not rare, decorative words; they are the load-bearing vocabulary of lectures, journal articles, and exam passages alike.

Below, we work through just over one hundred of the most useful of them — 101 in all — organised into five thematic groups. Every word comes with its part of speech, a plain-English definition, and one high-value collocation, and each group closes with a closer look at three troublemakers, pronunciation included.

Why Precision Moves Your Band Score

The people who mark your exam do not simply count difficult words. In IELTS Writing, one of the four official marking criteria is Lexical Resource, which assesses the range of your vocabulary and how precisely you use it. PTE Academic works along similar lines: vocabulary is one of the enabling skills feeding into your writing and speaking scores.

The crucial word there is precision. Memorising definitions is not enough — you also need to know which part of speech a word is, which words it naturally partners with (its collocations), and how it behaves inside a full sentence. "The government should take measures to tackle this issue" sounds far stronger than "the government must do something about this problem", even though both sentences are grammatical. Range without precision gains little; precision alone already lifts your band score for this criterion.

One Table at a Time

Here is the method I give my own learners, because it matters more than speed. Study one group for ten or fifteen minutes. Close the page and try to rebuild a few table rows from memory. Return the next day, test yourself on that group again, and only then move on. This small loop of study, retrieve, revisit moves words into long-term memory far more reliably than rereading a list five times in a row — spacing your practice across days beats marathon sessions almost every time.

Group 1: Research and Analysis

These are the words academic writers reach for whenever they discuss studies, findings, and proof. Expect to meet every one of them in reading passages — and to need several of them in your own Task 2 essays.

Key Words in Focus

Assess /əˈses/ — More precise than "check" or "look at": when you assess something, you examine it carefully in order to judge it. Example: "Before the new road is built, the council must assess its impact on local wildlife."

Demonstrate /ˈdemənstreɪt/ — To show clearly that something is true; stronger and more precise than "show". Common patterns include demonstrate a connection, demonstrate the ability, and clearly demonstrate. Example: "The study demonstrates that regular reading improves vocabulary retention."

Evidence /ˈevɪdəns/ — Uncountable, so "evidences" does not exist in standard English. Safe patterns: strong evidence, provide evidence for, based on the evidence, the evidence suggests. Example: "There is strong evidence to support the claim that regular exercise reduces stress."

Group 2: Argument and Persuasion

Task 2 essays and PTE's Write Essay task live or die by argument. These words let you state a position, weigh other views against it, and signal how strong your claim is.

Key Words in Focus

Contribute /kənˈtrɪbjuːt/ — Always followed by to: "Several factors contribute to the rise in childhood obesity." The noun form is contribution (countable): "She made a significant contribution to the field."

Significant /sɪɡˈnɪfɪkənt/ — "Large enough to matter", not simply "big". Collocations: significant impact, significant role, statistically significant. Example: "Climate change poses a significant threat to biodiversity." In academic writing this word is far more informative than "important", because it tells the reader how important.

Perspective /pəˈspektɪv/ — A viewpoint or way of seeing something. Example: "From an economic perspective, immigration brings both benefits and drawbacks." In Task 2 essays, naming perspectives — economic, ethical, environmental — is a tidy way to present two sides fairly before giving your own view.

Group 3: Change, Process, and Development

Describing how things happen, change, or grow is central to IELTS Task 1 charts and process diagrams as well as to PTE tasks. These words give you a precise toolkit for exactly that job.

Key Words in Focus

Adapt /əˈdæpt/ — To adjust to new conditions. Collocations: adapt to, adapt successfully, adapt quickly. Example: "Students must adapt to different teaching styles when they start university." Do not confuse it with "adopt" (to take something on as your own) — companies adopt policies; animals adapt to colder climates.

Emerge /ɪˈmɜːdʒ/ — To come into view or become known. Example: "New evidence has emerged that challenges the original theory." You will meet this word constantly in reading passages announcing fresh findings: facts emerge, problems emerge, consensus emerges.

Establish /ɪˈstæblɪʃ/ — To set up or prove something. Example: "The purpose of the study was to establish a link between diet and academic performance." Because it signals certainty, save it for conclusions the research actually supported rather than merely hinted at.

Group 4: Society, Law, and Policy

IELTS topics circle endlessly around society — income, crime, education, health, migration — so expect these words in reading passages about social issues, government policy, and global trends.

Key Words in Focus

Occur /əˈkɜː(r)/ — A more formal alternative to "happen". Example: "Accidents are more likely to occur when drivers are tired or distracted." Watch the spelling when adding endings: the past tense is occurred with a double r, not "occured".

Proportion /prəˈpɔːʃn/ — A part or share of a whole. Example: "A significant proportion of university students experience exam anxiety." This word is indispensable in IELTS Task 1 writing, where rotating between proportion, percentage, and share keeps a data description from sounding repetitive.

Legislation /ˌledʒɪsˈleɪʃn/ — A formal word for law. Example: "The government introduced new legislation to cut carbon emissions." Grammar alert: uncountable. Say a piece of legislation or new legislation — never "a legislation".

Group 5: Essay and Report Essentials

Think of these as the connective tissue of academic writing: they frame arguments, manage information, and link ideas smoothly from one sentence to the next.

Key Words in Focus

Context /ˈkɒntekst/ — The situation or background that helps you understand something. Example: "The meaning of a word often depends on the context in which it appears." Useful twice over: phrases such as in this context earn marks in your writing, and context is exactly how you should be learning every word on this page.

Hence /hens/ — A compact, formal way to say "therefore" or "for this reason". Example: "House prices have risen sharply; hence, many young families rent for longer." It sits comfortably after a semicolon and suits conclusions well — but use one logical signpost per sentence rather than stacking several.

Fundamental /ˌfʌndəˈmentl/ — Basic, essential, at the root of everything else. Example: "Access to clean water is a fundamental human need." Collocations include fundamental change, fundamental principle, and fundamentally important. Reach for it when "important" would undersell the idea.

The Mistakes I Mark Most Often

Time and again, practice essays contain the same handful of errors — and none of them involves rare vocabulary. They all involve small words and endings, which is exactly why they are worth fixing first.

1. Prepositions gone astray. Academic verbs are loyal to particular prepositions: contribute to (never "contribute for"), adapt to (not "adapt with"), depend on, participate in, respond to. And when you mean "be made up of", the phrase is consist of — do not swap the of for anything else. Learn each verb together with its preposition as one unbreakable unit.

2. Countable meets uncountable. Evidence and legislation refuse to take a plural -s or an indefinite article: say a piece of evidence and new legislation, never "an evidence" or "a legislation". One learner kept writing "many evidences" in essay after essay until she began checking whether each noun was countable before adding any plural ending. As for data: it is technically plural (singular: datum), and strict scientific style still prefers "the data show", although modern academic texts generally accept "the data shows". Either choice is defensible — just stay consistent within one essay.

3. Vague adjectives doing all the work. Important and big are honest words but weak engines. Replace important with significant, crucial, or fundamental; replace big with substantial, considerable, or major. Remember the two sentences at the top of this guide: this single habit does more for your Lexical Resource mark than memorising fifty rare words ever would.

4. Lookalike pairs swapping places. Adapt means to change yourself; adopt means to take something on. Affect is usually the verb ("pollution affects health") while effect is usually the noun ("pollution has an effect on health"). And keep an eye on principle (a basic rule) versus principal (main, or a head teacher). If you know you mix certain words up, keep a short personal list of confusable pairs and review it weekly.

Small Daily Habits That Make These Words Stick

You do not need hours of free time — most learners fit vocabulary study around jobs and families. What matters is frequency, not duration: ten minutes daily beats a two-hour Sunday cram almost every time.

The Table Sweep. Pick one group above, read through its table once, close the page, and write down as many words, definitions, and collocations as you can remember. Then check yourself. This active recall feels harder than rereading — that difficulty is precisely why it works.

The Sentence Swap. Take one word each day and write three different sentences with it. When we practise this in lessons, I ask for three genuinely different contexts, not three variations on one sentence: "The difference between the two groups was significant." "Rising sea levels pose a significant threat to coastal cities." "Moving abroad alone was a significant step for her." Each sentence uses the word differently, and that variety is what deepens understanding.

The Collocation Journal. Keep a small notebook or phone note. Whenever you meet one of these words in a news article, textbook, or practice test, record the whole phrase it appeared in, not the lone word. Over time you build a personal bank of ready-made chunks that sound natural rather than memorised — and if you are unsure how a word behaves, look it up in Oxford Learner's Dictionaries or the Cambridge Dictionary online, both of which give reliable collocations and example sentences.

The One-Word Challenge. Each morning, choose one word from the list and use it at least once during the day — in a text message, a conversation, or a journal entry. The goal is not elegance; it is familiarity. Words you have actually used feel different from words you have only seen.

A Two-Minute Self-Check

Fill each gap with a suitable word from the five tables above. Answers follow below the questions — no peeking until you have tried all eight.

1. The researchers hoped to __________ a connection between sleep quality and memory performance.
2. A large __________ of the population lives below the poverty line.
3. The company decided to __________ heavily in renewable energy projects.
4. Students must __________ quickly to new academic expectations when they start university.
5. The study provides strong __________ for this claim.
6. From a legal __________, the policy would be difficult to enforce.
7. Production costs have risen; __________, prices for consumers have increased.
8. Access to education is a __________ right for all children.

Answers: 1. establish · 2. proportion · 3. invest · 4. adapt · 5. evidence · 6. perspective · 7. hence · 8. fundamental

If you answered six or more correctly, you are making solid progress. If you scored lower, do not worry — revisit the relevant group tomorrow and try again. Progress here happens one session at a time.

Start With One Table

A hundred-odd new words will not settle into your long-term memory tonight, and they do not need to. Vocabulary grows the way fitness does: through steady sessions, honest self-testing, and returning to earlier material until it feels comfortably familiar.

Start with whichever group matches the topics you find hardest to write about. Sit with it for a few days using the habits above, then move to the next — and come back to this guide whenever you need a refresher. Learners who revise steadily in this way tend to see steadier progress than those who chase a fresh word list every week, because accuracy with familiar words is what markers actually reward. You now have the words and a method for keeping them. The rest is repetition — and repetition, unlike inspiration, is entirely under your control.