Computer vs Machine

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

Computer

Top 1,000 (very common)A1noun

Machine

Top 1,000 (very common)A1noun
 ComputerMachine
Pronunciation🇬🇧 /["/kəmˈpjuːtə(r)/"]/🇺🇸 /["/kəmˈpjuːtər/"]/🇬🇧 /["/məˈʃiːn/"]/🇺🇸 /["/məˈʃiːn/"]/
MeaningA machine that can store and process information.A machine is a device that uses energy to do work or perform a task.
ExampleI use my computer to complete my homework.The machine was broken, so we couldn't finish our work.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA1A1
Part of speechnounnoun
Collocationsfast, high-speed, powerful, access, operate, run, run, work, hold something, network, program, system, on (a/​the) computergiant, great, huge, operate, run, use, go, work, break down, operator, parts, tool, by machine, in a/​the machine, on a/​the machine, a make of machine, party, political, marketing, politician, politics, a cog in the machine, a well-oiled machine
Antonymshuman, personhuman, organism
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'.Confusing 'machine' with 'mechanism'—a mechanism is a part of a machine., Using 'machine' to refer to non-mechanical items like software., Overgeneralizing 'machine' to include tools that don't use power.
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.Use 'machine' for mechanical devices like cars or computers. Avoid using it for living beings or to describe simple tools.

Frequently asked questions: Computer vs Machine

What's the difference between Computer and Machine?

Computer: A machine that can store and process information. Machine: A machine is a device that uses energy to do work or perform a task.

Are Computer and Machine the same CEFR level?

Computer: A1, Machine: A1 on the CEFR scale.

Can I use Computer and Machine interchangeably?

Not always. Computer and Machine 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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