fate vs happening

fate and happening both are nouns.

Word	Noun	Adjective	Verb	Adverb
fate	Yes	No	Yes	No
happening	Yes	No	No	No

As nouns, happening is a hypernym of fate; that is, happening is a word with a broader meaning than fate:

fate: an event (or a course of events) that will inevitably happen in the future
happening: an event that happens

Other hypernyms of fate include natural event, occurrence, occurrent.

fate (noun)	happening (noun)
an event (or a course of events) that will inevitably happen in the future	an event that happens
the ultimate agency regarded as predetermining the course of events
your overall circumstances or condition in life (including everything that happens to you)

fate (verb)	happening (verb)
decree or designate beforehand