clipper ship vs sailing vessel

clipper ship and sailing vessel both are nouns.

Word	Noun	Adjective	Verb	Adverb
clipper ship	Yes	No	No	No
sailing vessel	Yes	No	No	No

As nouns, sailing vessel is a hypernym of clipper ship; that is, sailing vessel is a word with a broader meaning than clipper ship:

clipper ship: a fast sailing ship used in former times
sailing vessel: a vessel that is powered by the wind; often having several masts

Other hypernyms of clipper ship include sailing ship.

clipper ship (noun)	sailing vessel (noun)
a fast sailing ship used in former times	a vessel that is powered by the wind; often having several masts