Englishfor English speakers
chapter
Noun
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A chapter is a main division of a book.
We read chapter five in the blue textbook.
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A chapter is a local part of a larger organisation.
The Toronto chapter of the Red Cross is collecting blood today.
heading
Noun
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A heading is the title or topic of a document, article or sections.
We did not trust the report because there was a typo in the heading.