barque vs sailing ship

barque and sailing ship both are nouns.

Word	Noun	Adjective	Verb	Adverb
barque	Yes	No	No	No
sailing ship	Yes	No	No	No

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

barque: a sailing ship with 3 (or more) masts
sailing ship: a vessel that is powered by the wind; often having several masts

Other hypernyms of barque include sailing vessel.

barque (noun)	sailing ship (noun)
a sailing ship with 3 (or more) masts	a vessel that is powered by the wind; often having several masts