galley vs watercraft

galley and watercraft both are nouns.

Word	Noun	Adjective	Verb	Adverb
galley	Yes	No	No	No
watercraft	Yes	No	No	No

As nouns, watercraft is a hypernym of galley; that is, watercraft is a word with a broader meaning than galley:

galley: (classical antiquity) a crescent-shaped seagoing vessel propelled by oars
watercraft: a craft designed for water transportation

Other hypernyms of galley include vessel.

As nouns, watercraft is a hypernym of galley; that is, watercraft is a word with a broader meaning than galley:

galley: a large medieval vessel with a single deck propelled by sails and oars with guns at stern and prow; a complement of 1,000 men; used mainly in the Mediterranean for war and trading
watercraft: a craft designed for water transportation

Other hypernyms of galley include vessel.

galley (noun)	watercraft (noun)
the area for food preparation on a ship	a craft designed for water transportation
the kitchen area for food preparation on an airliner	skill in the management of boats
(classical antiquity) a crescent-shaped seagoing vessel propelled by oars
a large medieval vessel with a single deck propelled by sails and oars with guns at stern and prow; a complement of 1,000 men; used mainly in the Mediterranean for war and trading