Cell vs Room

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

Cell

Top 1,000 (very common)B2noun

Room

Top 1,000 (very common)A1noun
 CellRoom
Pronunciation🇬🇧 /["/sel/"]/🇺🇸 /["/sel/"]/🇬🇧 /["/ruːm//rʊm/"]/🇺🇸 /["/ruːm//rʊm/"]/
MeaningA small room or a basic unit of life.A space inside a building, used for living, working, or sleeping.
Examplered and white **blood cells**I have a small room in my house for studying.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB2A1
Part of speechnounnoun
Collocationsdead, living, healthy, create, form, grow, divide, develop, form, division, growth, proliferation, the nucleus of a cell, monk’s, nun’s, jail, in a/​the cell, monk’s, nun’s, jail, in a/​the cellbig, cavernous, enormous, burst into, come into, creep into, adjoin something, face something, overlook something, key, number, lights, around a/​the room, round a/​the room, from room to room, big, cavernous, enormous, burst into, come into, creep into, adjoin something, face something, overlook something, key, number, lights, around a/​the room, round a/​the room, from room to room, ample, considerable, enough, find, leave, make, room for, room for manoeuvre/​maneuver
Antonymswhole, entityhall, open space
Common mistakesConfused with 'sell' when speaking., Using 'cell' only for prisons and ignoring biological context., Mixing up 'cell phone' with 'cellular phone'.Confused with 'space', which is more general., Using 'room' to refer to outdoor areas., Incorrect pluralization; 'rooms' should not be confused with 'room's' (possessive).
Usage notesUse 'cell' to refer to biological cells in science or small rooms in prisons. Avoid in casual contexts for non-medical meanings.Commonly used in both formal and informal contexts. You would use 'room' in conversations about homes, offices, or any enclosed space. Avoid using it in contexts that require more specific terms like 'office' or 'kitchen'.

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Cell
Room

Frequently asked questions: Cell vs Room

What's the difference between Cell and Room?

Cell: A small room or a basic unit of life. Room: A space inside a building, used for living, working, or sleeping.

Which is more advanced: Cell and Room?

Cell is the highest level, at B2, on the CEFR scale.

Are Cell and Room the same CEFR level?

Cell: B2, Room: A1 on the CEFR scale.

What part of speech are Cell and Room?

Cell: noun, Room: noun.

Can you show an example of each?

Cell: red and white **blood cells** Room: I have a small room in my house for studying.

Can I use Cell and Room interchangeably?

Not always. Cell and Room 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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