IELTS Writing Task 1 Vocabulary for Graphs, Charts and Processes

To describe a graph in IELTS Task 1, you need three kinds of language: verbs and nouns for change, adverbs and adjectives for size and speed, and comparison phrases for amounts. You also need to report the main features, not every number. Aim for at least 150 words in about 20 minutes.

This guide gives the vocabulary for line graphs, bar charts, tables and processes, with example sentences you can adapt. For full model answers, see our Task 1 samples.

Verbs and nouns for change over time

Direction	Verbs	Nouns
Up	rise, increase, grow, climb, go up	a rise, an increase, growth
Down	fall, decrease, decline, drop, go down	a fall, a decrease, a decline, a drop
Steady	remain stable, stay constant, level off	a plateau, stability
Up and down	fluctuate	fluctuations
Highest point	peak, reach a peak	a peak
Lowest point	bottom out, hit a low	a low, the lowest point

Prefer variety, but keep accuracy. "Rocket" and "plummet" are strong words, and they only suit very sharp changes.

Adverbs and adjectives for size and speed

• Big change: dramatically, sharply, significantly, considerably
• Small change: slightly, marginally, modestly
• Quick: rapidly, quickly, steeply
• Slow: gradually, steadily, slowly

Each verb can be paired with an adverb ("rose sharply") or you can use an adjective with a noun ("a sharp rise"). Both patterns are useful, and mixing them improves your grammatical range.

Example sentences for line graphs

1. The number of visitors rose steadily from 2 million in 2010 to 3.5 million in 2020.
2. There was a sharp decline in sales between March and May, from 400 to 150 units.
3. Prices remained stable at around $20 for the first six months.
4. Electricity use fluctuated between 50 and 70 units before peaking at 85 in July.
5. After reaching a low of 12 percent in 2005, unemployment recovered gradually.

The pattern is time, number, direction and endpoint. Always mention the starting and ending values and the highest or lowest point if it matters.

Example sentences for bar charts and tables

For static data there is no time change, so you compare. Useful phrases:

• the highest / the lowest / the largest / the smallest
• twice as high as, three times as many as, half as much as
• slightly higher than, considerably lower than, roughly the same as
• accounted for, made up, represented (for proportions)
• whereas, while, in contrast (for contrast)

• Japan spent the most on research, at around $170 billion, which was nearly double the figure for Germany.
• Cars accounted for 55 percent of all journeys, compared with only 8 percent for cycling.
• Women made up the majority of enrolments in nursing, whereas men dominated engineering.
• Rent was the largest expense in every household category, ranging from 28 to 41 percent of income.

Avoid copying every number from a table. Group items: "The three Asian countries spent more than the European ones" is a better summary than listing six figures.

Fractions and approximations

You often need to avoid exact figures if the chart is approximate. Try: about, approximately, roughly, just over, just under, nearly, almost, around, a little more than, exactly.

• Just over a quarter of respondents chose public transport.
• Almost two thirds of the budget went on salaries.

Check expressions: "a quarter" (25 percent), "a third" (33 percent), "a half" (50 percent), "three quarters" (75 percent). If the chart says percent, you may write "percent" or "%" consistently.

Language for processes

A process diagram has no trends, so use the present simple passive and sequencers.

• Passive verbs: is heated, is filtered, is collected, is then transported, are removed.
• Sequencers: First, Next, After that, Then, Subsequently, Finally.
• Linking: once it has cooled, before being packed, while the mixture is stirred.

• First, the raw sugar cane is cut and transported to the factory.
• Once the juice has been extracted, it is heated and filtered to remove impurities.
• Finally, the crystals are dried and packed into sacks for distribution.

For the right connectors in a process, read our guide to linking words.

Tenses: a quick rule

• Past dates (2005, 2012): past simple. "Sales rose in 2012."
• Future dates (2030): will, is expected to, is predicted to.
• No time, or timeless process: present simple.
• Period up to now: present perfect. "Numbers have increased since 2015."

Mixing tenses without a reason is one of the most common Task 1 errors.

A simple four-paragraph plan

1. Introduction: paraphrase the title in one sentence.
2. Overview: two or three main features, no detailed numbers.
3. Body 1: the first group of data, with figures.
4. Body 2: the second group of data, with figures.

Without a clear overview, your Task Achievement band will usually stay low. That is a good thing to practise first, and the general requirements are explained in our Task 1 guide.

Common mistakes

• Writing opinions or reasons: "This is probably because of the economy." Task 1 is only for describing data.
• Saying "The graph shows" ten times; vary with "is illustrated", "can be seen".
• Confusing "the number of" (countable) and "the amount of" (uncountable): "the number of cars", "the amount of rainfall".
• Using "increase" in the wrong tense: "It was increase."

Scorify can give AI feedback on a Task 1 answer with an estimated band, which is useful for checking your overview and accuracy. It is practice feedback, not an official result.

Checklist

• Write one overview with the main trends.
• Select and group data; do not list everything.
• Use a range of verbs, adverbs and comparison phrases.
• Keep tenses consistent with the dates.
• Do not add reasons or opinions.