ace vs genius

ace and genius both are nouns.

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

As nouns, ace and genius are synonyms defined as:

Other synonyms of ace include adept, champion, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard.

ace (noun)	genius (noun)
a serve that the receiver is unable to reach	exceptional creative ability
one of four playing cards in a deck having a single pip on its face	a natural talent
someone who is dazzlingly skilled in any field	unusual mental ability
the smallest whole number or a numeral representing this number	someone who has exceptional intellectual ability and originality
	someone who is dazzlingly skilled in any field

ace (adjective)	genius (adjective)
of the highest quality