Longman Dictionary of Contemporary English homepage

coherence

 noun
     
co‧her‧ence also co‧her‧en‧cy [uncountable]
1 when something such as a piece of writing is easy to understand because its parts are connected in a clear and reasonable way:
An overall theme will help to give your essay coherence.
He had a coherence of outlook and thought.
2 if a group has coherence, its members are connected or united because they share common aims, qualities, or beliefs:
A common religion ensures the coherence of the tribe.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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