gimcrack vs ornament

gimcrack and ornament both are nouns.

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

As nouns, ornament is a hypernym of gimcrack; that is, ornament is a word with a broader meaning than gimcrack:

Other hypernyms of gimcrack include decoration, ornamentation.

gimcrack (noun)	ornament (noun)
ornamental objects of no great value	something used to beautify

gimcrack (adjective)	ornament (adjective)
tastelessly showy

gimcrack (verb)	ornament (verb)
	make more attractive by adding ornament, colour, etc.
	be an ornament to