warm the bench vs athletics

warm the bench is not a noun while athletics is a noun.

Word	Noun	Adjective	Verb	Adverb
warm the bench	No	No	Yes	No
athletics	Yes	No	No	No

warm the bench (noun)	athletics (noun)
	an active diversion requiring physical exertion and competition
	participation in sports events as an extracurricular activity
	a contest between athletes

warm the bench (verb)	athletics (verb)
be out of the game