occurrence
nounUK /əˈkʌr.əns/
US /əˈkɝː.əns/
An occurrence is something that happens.
The loud thunder was a strange occurrence last night.
OTHER MEANINGS
2. The fact of something happening or existing.
The occurrence of rain in the desert is rare.
3. A single case or example of something.
This was the first occurrence of the problem in years.
4. The rate at which something happens.
Scientists study the occurrence of earthquakes in the region.