repercussion vs upshot

repercussion and upshot both are nouns.

Word	Noun	Adjective	Verb	Adverb
repercussion	Yes	No	No	No
upshot	Yes	No	No	No

As nouns, upshot is a hypernym of repercussion; that is, upshot is a word with a broader meaning than repercussion:

Other hypernyms of repercussion include consequence, effect, event, issue, outcome, result.

repercussion (noun)	upshot (noun)
a movement back from an impact	a phenomenon that follows and is caused by some previous phenomenon
a remote or indirect consequence of some action