clean up vs cleanup

clean up is not a noun while cleanup is a noun.

Word	Noun	Adjective	Verb	Adverb
clean up	No	No	Yes	No
cleanup	Yes	No	No	No

clean up (noun)	cleanup (noun)
	the act of making something clean
	(baseball) the fourth position in the batting order (usually filled by the best batter on the team)
	a very large profit

clean up (verb)	cleanup (verb)
make oneself clean, presentable or neat
put (things or places) in order
finish attending to
make a big profit; often in a short period of time