Error vs Mistake

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

Error

Top 1,000 (very common) A2 noun

Mistake

Top 1,000 (very common) A1 noun

	Error	Mistake
Pronunciation	🇬🇧 /["/ˈerə(r)/"]/ 🇺🇸 /["/ˈerər/"]/	🇬🇧 /["/mɪˈsteɪk/"]/ 🇺🇸 /["/mɪˈsteɪk/"]/
Meaning	A mistake or something wrong that happens.	An error or something done wrongly.
Example	I made an error in my calculations.	I made a mistake on my homework.
Register	Neutral	Neutral
How common	Top 1,000 (very common)	Top 1,000 (very common)
CEFR level	A2	A1
Part of speech	noun	noun
Collocations	egregious, fundamental, glaring, commit, make, cause, arise (from something), occur, result (from something), detection, correction, message, in error, error in, a comedy of errors, an error in judgement/​judgment, an error of judgement/​judgment	big, colossal, great, make, commit, repeat, happen, occur, by mistake, mistake about, all a mistake, an easy mistake to make, make the mistake of doing something, big, colossal, great, make, commit, repeat, happen, occur, by mistake, mistake about, all a mistake, an easy mistake to make, make the mistake of doing something
Antonyms	success, correctness, accuracy	correct, success
Common mistakes	'Error' confused with 'mistake' – 'error' is usually more formal., Saying 'an error' and 'the error' interchangeably – be consistent with articles., Using 'error' without context – always clarify what type of error.	'Mistakes' as a singular instead of plural (e.g., saying 'a mistake' when referring to multiple errors)., Confusing 'mistake' with 'error', where 'mistake' is more general., Using 'mistake' without a clear object (e.g., saying 'I made a mistake' is fine, but 'I made' alone is unclear).
Usage notes	Use 'error' in both formal and casual contexts when talking about mistakes in writing, computer systems, or decisions. Avoid using it in very casual settings without explanation.	Used in both casual and formal contexts. It’s appropriate in everyday conversation but can also be used in professional discussions about errors.

See it in real clips

Sherlock › S1 E1

Wouldn't have taken him more than five minutes to realise his mistake.

Agatha Christies Poirot › S1 E1

if there's some mistake.

Sherlock › S1 E1

Wouldn't have taken him more than five minutes to realise his mistake.

Agatha Christies Poirot › S1 E1

if there's some mistake.

Mistake

Frequently asked questions: Error vs Mistake

What's the difference between Error and Mistake?

Error: A mistake or something wrong that happens. Mistake: An error or something done wrongly.

Which is more advanced: Error and Mistake?

Error is the highest level, at A2, on the CEFR scale.

Are Error and Mistake the same CEFR level?

Error: A2, Mistake: A1 on the CEFR scale.

What part of speech are Error and Mistake?

Error: noun, Mistake: noun.

Can you show an example of each?

Error: I made an error in my calculations. Mistake: I made a mistake on my homework.

Can I use Error and Mistake interchangeably?

Not always. Error and Mistake 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.