genius vs champion

genius and champion both are nouns.

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

As nouns, genius and champion are synonyms defined as:

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

genius (noun)	champion (noun)
exceptional creative ability	someone who fights for a cause
a natural talent	someone who has won first place in a competition
unusual mental ability	a person who backs a politician or a team etc.
someone who has exceptional intellectual ability and originality	someone who is dazzlingly skilled in any field
someone who is dazzlingly skilled in any field

genius (adjective)	champion (adjective)
	holding first place in a contest

genius (verb)	champion (verb)
	protect or fight for as a champion