Section vs Side

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

Section

Top 1,000 (very common)A1noun

Side

Top 1,000 (very common)A2noun
 SectionSide
Pronunciation🇬🇧 /["/ˈsekʃn/"]/🇺🇸 /["/ˈsekʃn/"]/🇬🇧 /["/saɪd/"]/🇺🇸 /["/saɪd/"]/
MeaningA part of something, like a piece of a whole.A part or direction of something, like the left or right.
ExamplePlease complete the form and sign in the designated section.She always carries her bag on her right side.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA1A2
Part of speechnounnoun
Collocationsopening, 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 societyfar, opposite, other, side of, at one side, at the side, sunny side up, far, opposite, other, side of, at one side, at the side, sunny side up, far, opposite, other, side of, at one side, at the side, sunny side up, far, opposite, other, side of, at one side, at the side, sunny side up, far, opposite, other, side of, at one side, at the side, sunny side up, left, left-hand, right, ache, hurt, down your side, in the/​your side, on your side, at somebody’s side, side by side, a pain in your side, flip, reverse, opposing, losing, winning, choose, switch, accuse somebody, argue something, want something, on side, on both sides, bright, plus, positive, have, show, hide, side to, somebody’s side of the story, see the funny side (of something), bright, plus, positive, have, show, hide, side to, somebody’s side of the story, see the funny side (of something), good, strong, full-strength, captain, skipper, lead, win (something), play, battle, let the side down, put your side ahead, put your side in front, left, left-hand, right, ache, hurt, down your side, in the/​your side, on your side, at somebody’s side, side by side, a pain in your side
Antonymswhole, entiretycenter, middle
Common mistakesUsing '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.'Side' is sometimes confused with 'sided' when describing shapes., 'Side' is incorrectly used to refer to the main part of something., Learners might use 'side' as a verb instead of a noun.
Usage notesUse '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.Use 'side' to refer to a part of something, like a building or an argument. It's neutral and widely applicable, but avoid using it when discussing the central or main part.

Frequently asked questions: Section vs Side

What's the difference between Section and Side?

Section: A part of something, like a piece of a whole. Side: A part or direction of something, like the left or right.

Are Section and Side the same CEFR level?

Section: A1, Side: A2 on the CEFR scale.

Can I use Section and Side interchangeably?

Not always. Section and Side 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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