war paint vs make-up

war paint and make-up both are nouns.

Word	Noun	Adjective	Verb	Adverb
war paint	Yes	No	No	No
make-up	Yes	No	No	No

As nouns, war paint and make-up are synonyms defined as:

war paint and make-up: cosmetics applied to the face to improve or change your appearance

Other synonyms of war paint include makeup.

war paint (noun)	make-up (noun)
full ceremonial regalia	cosmetics applied to the face to improve or change your appearance
adornment consisting of paint applied to the face and body of certain Amerindians before a battle	the way in which someone or something is composed
cosmetics applied to the face to improve or change your appearance	an event that is substituted for a previously cancelled event