Happen vs. Occur

Both verbs mean to take place, but they have a subtle difference that we are going to clarify in this lesson.

What is the difference between 'happen' and 'occur'?

'Happen' and 'occur' are both verbs that describe the occurrence of an event or situation. 'Happen' is more commonly used in everyday speech, while 'occur' is more formal.

Similarity

Both 'happen' and 'occur' mean to take place. Events that 'happen' or 'occur' might be unexpected and not planned. Additionally, they are both intransitive verbs.

The accident occurred at the intersection of 5th Avenue and Main Street.

Accidents like this happen in that area every once in a while.

Accidents are normally unexpected. Both 'happen' and 'occur' can be used to indicate unexpected events.

Difference

As mentioned earlier, 'occur' is more formal and less commonly used in everyday speech. Apart from the register, there is also a difference in the meaning of the two verbs. 'Happen' can refer to events that take place as a result of another event. For example:

I haven't changed my mind, I'm just curious to see what happens if I do it.

Here, the speaker is talking about the result of a specific action.

These changes happen as a result of advances in technology.

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