cheerleader vs champion

cheerleader and champion both are nouns.

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

As nouns, champion is a hypernym of cheerleader; that is, champion is a word with a broader meaning than cheerleader:

Other hypernyms of cheerleader include admirer, booster, friend, protagonist, supporter.

cheerleader (noun)	champion (noun)
someone who leads the cheers by spectators at a sporting event	someone who fights for a cause
an enthusiastic and vocal supporter	someone who has won first place in a competition
	a person who backs a politician or a team etc.
	someone who is dazzlingly skilled in any field

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

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