dress ship vs ornament

dress ship is not a noun while ornament is a noun.

Word	Noun	Adjective	Verb	Adverb
dress ship	No	No	Yes	No
ornament	Yes	No	Yes	No

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

Other hypernyms of dress ship include adorn, beautify, decorate, embellish, grace.

dress ship (noun)	ornament (noun)
	something used to beautify

dress ship (verb)	ornament (verb)
decorate a ship with flags	make more attractive by adding ornament, colour, etc.
	be an ornament to