Let's say a festival is a en "event" that is organised every year, so it's (a recurring event). But that festival in 2017 happened on a precise range of dates is an event to (an event occurrence).
In English, by chance, are there two distinct single names that could help distinguishing a (recurring) event and an event (occurrence)?
(This question was triggered when thinking of names for tables in a database so I can't use twice the same word. My mother language is French, and I think that I would have the same issue in French.)