Computer vs Device

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

Computer

Top 1,000 (very common)A1noun

Device

Top 1,000 (very common)A2noun
 ComputerDevice
Pronunciation🇬🇧 /["/kəmˈpjuːtə(r)/"]/🇺🇸 /["/kəmˈpjuːtər/"]/🇬🇧 /["/dɪˈvaɪs/"]/🇺🇸 /["/dɪˈvaɪs/"]/
MeaningA machine that can store and process information.A tool or machine used for a specific purpose.
ExampleI use my computer to complete my homework.I use a smartphone as my main device for communication.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA1A2
Part of speechnounnoun
Collocationsfast, high-speed, powerful, access, operate, run, run, work, hold something, network, program, system, on (a/​the) computerclever, ingenious, labour-saving/​labor-saving, be fitted with, have, connect, comprise something, consist of something, be designed to, device for, clever, ingenious, labour-saving/​labor-saving, be fitted with, have, connect, comprise something, consist of something, be designed to, device for
Antonymshuman, persondisuse, neglect
Common mistakesConfused with 'laptop' which is a type of computer., Using 'computer' as a verb (it's only a noun)., Incorrectly spelling 'computer' as 'computor'.Confused with 'devise', which means to create or plan something., Using 'device' as a verb; it is only a noun., Assuming all devices are electronic; can refer to any tool.
Usage notesUsed in both formal and informal contexts. Appropriate in discussions about technology, education, and everyday tasks. Avoid using in slang-heavy or overly casual conversations.Used to refer to gadgets or instruments, often in technology. More common in tech contexts. Avoid in very casual settings where simpler terms (like 'thing') might be used.

Frequently asked questions: Computer vs Device

What's the difference between Computer and Device?

Computer: A machine that can store and process information. Device: A tool or machine used for a specific purpose.

Are Computer and Device the same CEFR level?

Computer: A1, Device: A2 on the CEFR scale.

Can I use Computer and Device interchangeably?

Not always. Computer and Device 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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