redecorate vs ornament

redecorate is not a noun while ornament is a noun.

Word	Noun	Adjective	Verb	Adverb
redecorate	No	No	Yes	No
ornament	Yes	No	Yes	No

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

Other hypernyms of redecorate include adorn, beautify, decorate, embellish, grace.

redecorate (noun)	ornament (noun)
	something used to beautify

redecorate (verb)	ornament (verb)
redo the decoration of an apartment or house	make more attractive by adding ornament, colour, etc.
	be an ornament to