Accident vs Coincidence

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

Accident

Top 1,000 (very common)A2noun

Coincidence

Top 2,000 (common)B2noun
Most common: Accident
 AccidentCoincidence
Pronunciation🇬🇧 /["/ˈæksɪdənt/"]/🇺🇸 /["/ˈæksɪdənt/"]/🇬🇧 /["/kəʊˈɪnsɪdəns/"]/🇺🇸 /["/kəʊˈɪnsɪdəns/"]/
MeaningSomething that happens unexpectedly, usually causing harm or damage.When two things happen at the same time by chance.
ExampleThe car accident caused a long traffic jam.It was just a coincidence that we ran into each other at the café.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA2B2
Part of speechnounnoun
Collocationsbad, dreadful, horrible, be involved in, have, meet with, happen, occur, take place, black spot, victim, prevention, in an/​the accident, an accident involving, an accident waiting to happen, the scene of the accident, mere, pure, sheer, by accident, an accident of birth, an accident of history, be no accident that…complete, pure, sheer, series, set, string, happen, by (a) coincidence
Antonymsintentional act, designintention, design
Common mistakesConfused with 'incident' - 'incident' can imply a more serious event., Using 'accident' in a context where something was done deliberately., Incorrectly using 'accident' as a verb.Confusing 'coincidence' with 'coincidental' — the latter is an adjective., Using 'coincidence' when describing causal relationships instead of chance., Overusing in formal writing; it's better in casual conversation.
Usage notesUse 'accident' in both formal and informal contexts when discussing unintentional events. Avoid using it in situations where intent is involved or when describing planned events.Use 'coincidence' when referring to events that happen together unexpectedly. Avoid using it in formal scientific contexts, where 'correlation' might be more appropriate.

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Accident
Coincidence

Frequently asked questions: Accident vs Coincidence

What's the difference between Accident and Coincidence?

Accident: Something that happens unexpectedly, usually causing harm or damage. Coincidence: When two things happen at the same time by chance.

Which is more common: Accident and Coincidence?

Accident is the most common in everyday English.

Which is more advanced: Accident and Coincidence?

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

Are Accident and Coincidence the same CEFR level?

Accident: A2, Coincidence: B2 on the CEFR scale.

What part of speech are Accident and Coincidence?

Accident: noun, Coincidence: noun.

Can you show an example of each?

Accident: The car accident caused a long traffic jam. Coincidence: It was just a coincidence that we ran into each other at the café.

Can I use Accident and Coincidence interchangeably?

Not always. Accident and Coincidence 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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