football game vs line up

football game is a noun but line up is not a noun.

Word	Noun	Adjective	Verb	Adverb
football game	Yes	No	No	No
line up	No	No	Yes	No

football game (noun)	line up (noun)
any of various games played with a ball (round or oval) in which two teams try to kick or carry or propel the ball into each other's goal

football game (verb)	line up (verb)
	place in a line or arrange so as to be parallel or straight
	take one's position before a kick-off
	arrange in ranks
	form a queue, form a line, stand in line
	get something or somebody for a specific purpose
	form a line