bilge vs bilges

bilge and bilges both are nouns.

Word	Noun	Adjective	Verb	Adverb
bilge	Yes	No	Yes	No
bilges	Yes	No	No	No

As nouns, bilges is a hyponym of bilge; that is, bilges is a word with a more specific, narrower meaning than bilge:

bilge: where the sides of the vessel curve in to form the bottom
bilges: in a vessel with two hulls, an enclosed area between the frames at each side

bilge (noun)	bilges (noun)
where the sides of the vessel curve in to form the bottom	in a vessel with two hulls, an enclosed area between the frames at each side
water accumulated in the bilge of a ship

bilge (verb)	bilges (verb)
take in water at the bilge
cause to leak