fore-topmast staysail vs jib

fore-topmast staysail and jib both are nouns.

Word	Noun	Adjective	Verb	Adverb
fore-topmast staysail	Yes	No	No	No
jib	Yes	No	Yes	No

As nouns, jib is a hypernym of fore-topmast staysail; that is, jib is a word with a broader meaning than fore-topmast staysail:

fore-topmast staysail: the innermost jib (just ahead of the foremast) on a large square-rigged ship.
jib: any triangular fore-and-aft sail (set forward of the foremast)

fore-topmast staysail (noun)	jib (noun)
the innermost jib (just ahead of the foremast) on a large square-rigged ship.	any triangular fore-and-aft sail (set forward of the foremast)

fore-topmast staysail (verb)	jib (verb)
	shift from one side of the ship to the other
	refuse to comply