quarterback vs eleven

quarterback and eleven both are nouns.

Word	Noun	Adjective	Verb	Adverb
quarterback	Yes	No	Yes	No
eleven	Yes	Yes	No	No

quarterback (noun)	eleven (noun)
(American football) the position of the football player in the backfield who directs the offensive play of his team	a team that plays football
(football) the person who plays quarterback	the cardinal number that is the sum of ten and one

quarterback (adjective)	eleven (adjective)
	being one more than ten

quarterback (verb)	eleven (verb)
play the quarterback