Chapter vs Section

When to use each in English, with meaning, register, and examples.

Chapter

Top 2,000 (common)B1noun

Section

Top 1,000 (very common)A1noun
Most common: Section
 ChapterSection
Pronunciation🇬🇧 /["/ˈtʃæptə(r)/"]/🇺🇸 /["/ˈtʃæptər/"]/🇬🇧 /["/ˈsekʃn/"]/🇺🇸 /["/ˈsekʃn/"]/
MeaningA part of a book or story.A part of something, like a piece of a whole.
ExampleThe first chapter of the book introduces the main characters.Please complete the form and sign in the designated section.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB1A1
Part of speechnounnoun
Collocationsfirst, introductory, opening, be entitled something, be titled something, address something, read, write, dedicate, in a/​the chapter, chapter about, chapter on, difficult, sad, unhappyopening, concluding, final, dedicate, devote, add, leader, manager, in a/​the section, in sections, under section, a section of society, opening, concluding, final, dedicate, devote, add, leader, manager, in a/​the section, in sections, under section, a section of society, opening, concluding, final, dedicate, devote, add, leader, manager, in a/​the section, in sections, under section, a section of society, opening, concluding, final, dedicate, devote, add, leader, manager, in a/​the section, in sections, under section, a section of society, opening, concluding, final, dedicate, devote, add, leader, manager, in a/​the section, in sections, under section, a section of society
Antonymswhole, entiretywhole, entirety
Common mistakesConfusing 'chapter' with 'paragraph' which is shorter., Using 'chapters' when referring to individual stories in a collection without understanding the context., Mispronouncing the word as 'chat-per' instead of 'chap-ter'.Using 'section' instead of 'segment' in the context of a physical object., Confusing 'section' with 'sectional' when describing furniture., Adding unnecessary plural forms like 'sections' when referring to a single part.
Usage notesUsed in all contexts related to books, literature, and stories. It is appropriate in formal writing and casual conversations but should not be used in unrelated fields.Use 'section' when referring to a distinct part of a whole, such as a chapter in a book or a part of a document. Avoid using it in contexts where a more specific term could be clearer.

Frequently asked questions: Chapter vs Section

What's the difference between Chapter and Section?

Chapter: A part of a book or story. Section: A part of something, like a piece of a whole.

Which is more common: Chapter and Section?

Section is the most common in everyday English.

Are Chapter and Section the same CEFR level?

Chapter: B1, Section: A1 on the CEFR scale.

Can I use Chapter and Section interchangeably?

Not always. Chapter and Section are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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