mizzen vs fore-and-aft sail

mizzen and fore-and-aft sail both are nouns.

Word	Noun	Adjective	Verb	Adverb
mizzen	Yes	No	No	No
fore-and-aft sail	Yes	No	No	No

As nouns, fore-and-aft sail is a hypernym of mizzen; that is, fore-and-aft sail is a word with a broader meaning than mizzen:

mizzen: fore-and-aft sail set on the mizzenmast
fore-and-aft sail: any sail not set on a yard and whose normal position is in a fore-and-aft direction

mizzen (noun)	fore-and-aft sail (noun)
third mast from the bow in a vessel having three or more masts; the after and shorter mast of a yawl, ketch, or dandy	any sail not set on a yard and whose normal position is in a fore-and-aft direction
fore-and-aft sail set on the mizzenmast