clean up vs groom

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

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

As verbs, groom is a hypernym of clean up; that is, groom is a word with a broader meaning than clean up:

Other hypernyms of clean up include neaten.

clean up (noun)	groom (noun)
	a man who has recently been married
	someone employed in a stable to take care of the horses
	a man participant in his own marriage ceremony

clean up (verb)	groom (verb)
make oneself clean, presentable or neat	care for one's external appearance
put (things or places) in order	give a neat appearance to
finish attending to	educate for a future role or function
make a big profit; often in a short period of time