galley has 3 distinct synonyms spread across 1 of its 4 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
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
(classical antiquity) a crescent-shaped seagoing vessel propelled by oars
Synonyms, antonyms and the broader and narrower relations for galley come from Princeton University’s WordNet. Full sources and licences.
the kitchen area for food preparation on an airliner
the area for food preparation on a ship