impact vs event

impact and event both are nouns.

Word	Noun	Adjective	Verb	Adverb
impact	Yes	No	Yes	No
event	Yes	No	No	No

As nouns, event is a hypernym of impact; that is, event is a word with a broader meaning than impact:

Other hypernyms of impact include consequence, effect, issue, outcome, result, upshot.

impact (noun)	event (noun)
influencing strongly	something that happens at a given place and time
the violent interaction of individuals or groups entering into combat	a phenomenon located at a single point in space-time; the fundamental observational entity in relativity theory
the striking of one body against another	a phenomenon that follows and is caused by some previous phenomenon
a forceful consequence; a strong effect	a special set of circumstances

impact (verb)	event (verb)
have an effect upon
press or wedge together; pack together