impact vs outcome

impact and outcome both are nouns.

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

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

impact: a forceful consequence; a strong effect
outcome: a phenomenon that follows and is caused by some previous phenomenon

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

impact (noun)	outcome (noun)
influencing strongly	something that results
the violent interaction of individuals or groups entering into combat	a phenomenon that follows and is caused by some previous phenomenon
the striking of one body against another
a forceful consequence; a strong effect

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