tart up vs ornament

tart up is not a noun while ornament is a noun.

Word	Noun	Adjective	Verb	Adverb
tart up	No	No	Yes	No
ornament	Yes	No	Yes	No

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

Other hypernyms of tart up include adorn, beautify, decorate, embellish, grace.

tart up (noun)	ornament (noun)
	something used to beautify

tart up (verb)	ornament (verb)
dress up in a cheap and provocative way	make more attractive by adding ornament, colour, etc.
decorate in a cheap and flashy way	be an ornament to