outgrowth vs upshot

outgrowth and upshot both are nouns.

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

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

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

outgrowth (noun)	upshot (noun)
a natural prolongation or projection from a part of an organism either animal or plant	a phenomenon that follows and is caused by some previous phenomenon
the gradual beginning or coming forth
a natural consequence of development