lugsail vs fore-and-aft sail

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

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

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

lugsail: a sail with four corners that is hoisted from a yard that is oblique to the mast
fore-and-aft sail: any sail not set on a yard and whose normal position is in a fore-and-aft direction

lugsail (noun)	fore-and-aft sail (noun)
a sail with four corners that is hoisted from a yard that is oblique to the mast	any sail not set on a yard and whose normal position is in a fore-and-aft direction