bullpen vs ballpark

bullpen and ballpark both are nouns.

Word	Noun	Adjective	Verb	Adverb
bullpen	Yes	No	No	No
ballpark	Yes	No	No	No

bullpen (noun)	ballpark (noun)
a large cell where prisoners (people awaiting trial or sentence or refugees or illegal immigrants) are confined together temporarily	a facility in which ball games are played (especially baseball games)
a place on a baseball field where relief pitchers can warm up during a game	near to the scope or range of something