line up vs football

line up is not a noun while football is a noun.

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

line up (noun)	football (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
	the inflated oblong ball used in playing American football

line up (verb)	football (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