cookhouse vs galley

cookhouse and galley both are nouns.

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

As nouns, cookhouse and galley are synonyms defined as:

Other synonyms of cookhouse include caboose, ship's galley.

cookhouse (noun)	galley (noun)
the area for food preparation on a ship	the area for food preparation on a ship
a detached or outdoor shelter for cooking	the kitchen area for food preparation on an airliner
	(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