make up vs makeup

make up is not a noun while makeup is a noun.

Word	Noun	Adjective	Verb	Adverb
make up	No	No	Yes	No
makeup	Yes	No	No	No

make up (noun)	makeup (noun)
	cosmetics applied to the face to improve or change your appearance
	the way in which someone or something is composed
	an event that is substituted for a previously cancelled event

make up (verb)	makeup (verb)
apply make-up or cosmetics to one's face to appear prettier
put in order or neaten
come to terms
concoct something artificial or untrue
devise or compose
do or give something to somebody in return
make up work that was missed due to absence at a later point
form or compose
adjust for