Short answer: Coherence and Cohesion is 25% of your Writing band. Coherence is whether your ideas are logically organised and easy to follow; cohesion is how sentences connect. The catch most candidates miss: overusing linking words lowers this score rather than raising it.
✍️ Open Typehush and see natural cohesion in model essays →They're related but distinct. Coherence is the big picture: is the essay logically organised, with a clear line of argument the reader can follow from start to finish? Cohesion is the sentence-level glue: linking words, pronouns, and repeated ideas that connect one sentence to the next. You need both. An essay can have perfect connectors between sentences that individually don't add up to a coherent argument — and a well-argued essay can still feel choppy if the sentences don't link. This criterion rewards the two working together.
A simple analogy: coherence is the floor plan of a house, cohesion is the doorways between rooms. A house with a sensible plan but no doorways is hard to move through; a house with doorways everywhere but no plan is just a maze. IELTS wants both a sensible plan and well-placed doorways — a clear overall structure, joined by connections that are there exactly where you need to pass from one idea to the next, and not cluttering the places you don't.
The fastest coherence win is clear paragraphing: one central idea per paragraph, with a topic sentence that announces it. Four clean paragraphs — introduction, two bodies, conclusion — give the examiner an obvious structure to follow. Many essays lose marks here simply by cramming two ideas into one paragraph or breaking paragraphs randomly. Before you write, decide what each paragraph's one job is. That single discipline lifts coherence more than any linking phrase, because it makes the argument's shape visible at a glance.
Here's what surprises candidates: the band descriptors specifically flag overuse or mechanical use of cohesive devices as a feature of lower bands. Starting every sentence "Firstly… Moreover… Furthermore…" reads as a memorised checklist, not an argument, and it caps your score. Higher bands use connectors sparingly and appropriately, letting some sentences connect through meaning instead. More linking words is not more cohesion — often it's less. Use one where the logic genuinely needs a signpost, and trust the ideas to carry the rest.
Real cohesion has three tools, and connectors are only one. Reference: using "this," "it," "such measures," "the latter" to point back without repeating. Substitution and ellipsis: avoiding clunky repetition. Logical sequence: ordering sentences so each follows naturally from the last. A paragraph can flow beautifully with almost no explicit connectors if reference and order are handled well. Practising these quieter devices is what makes writing read as smooth and "unnoticeable," which is the language the top bands use.
Two quick self-checks. First, read only your topic sentences in order — do they trace a clear, logical argument on their own? If yes, your coherence is sound. Second, delete every linking word from a paragraph and reread it: if it still flows, your underlying structure is solid and the connectors were doing light work; if it falls apart, the linking words were propping up ideas that were never really joined. Fix the order and reference first; add connectors last.
Coherence and cohesion are absorbed more than taught. Reading and typing high-band model essays trains your ear for where a connector belongs, how reference threads an argument together, and what natural flow feels like — so your own writing stops sounding templated. On the computer test, a well-ordered essay is also faster to proofread, with fewer awkward joins to repair in your final minutes. Type enough strong essays and appropriate cohesion becomes a habit rather than a set of rules you consciously apply.
Type all 156 Cambridge Band 6–8 model essays with live word count →Coherence is whether your ideas are logically organised and easy to follow; cohesion is how your sentences connect through linking words, reference and sequence. Together they are 25% of your Writing band.
No. Overusing or mechanically using linking words is a feature of lower bands. Higher bands use connectors sparingly and let ideas connect through meaning and order.
Clear paragraphing — one central idea per paragraph with a topic sentence. It makes the argument easy to follow and lifts coherence more than any linking phrase.
Read only your topic sentences in order and see if they trace a clear argument. Also try deleting the linking words from a paragraph — good structure still flows without them.
Typehush — practise typing high-band IELTS model essays for the computer-based Writing test. Start practising · Model-essay library · Linking words · Task 2 structure