That parts of a paragraph or essay fit together logically and the ideas are connected.
Explanation:
Coherent means that a reasoning is logical and consistent. As a result, coherency is produced by several factors that combine to make every paragraph, sentence and phrase support the meaning of the whole text. Some coherence techniques are transitions, pronouns, synonyms, repetition, rephrasing and consistency of word choice.
It means that everything about the essay makes sense, and it "flows" there are no points of confusion or places where you seem to have irrelevant information
