endowment vs genius

endowment and genius both are nouns.

Word	Noun	Adjective	Verb	Adverb
endowment	Yes	No	No	No
genius	Yes	No	No	No

As nouns, genius is a hyponym of endowment; that is, genius is a word with a more specific, narrower meaning than endowment:

Other hyponyms of endowment include bent, hang, knack, flair, raw talent.

endowment (noun)	genius (noun)
the act of endowing with a permanent source of income	exceptional creative ability
natural abilities or qualities	a natural talent
the capital that provides income for an institution	unusual mental ability
	someone who has exceptional intellectual ability and originality
	someone who is dazzlingly skilled in any field