This is the 10046th most frequent Catalan word.
ocórrer
"Ocórrer" means "to happen" or "to occur."
The verb 'ocórrer' is used reflexively here to mean 'to come to mind' or 'to occur (to someone)’.
Em va ocórrer una idea interessant ahir.
An interesting idea occurred to me yesterday.
In this case, 'ocórrer' is used in its intransitive sense, referring to events happening.
Desafortunadament, ocorren accidents en aquesta carretera sovint.
Unfortunately, accidents occur often on this road.
Here, 'ocórrer' is used hypothetically in its conditional form to speculate about potential events.