barge vs boat

barge and boat both are nouns.

Word	Noun	Adjective	Verb	Adverb
barge	Yes	No	Yes	No
boat	Yes	No	Yes	No

As nouns, boat is a hypernym of barge; that is, boat is a word with a broader meaning than barge:

barge (noun)	boat (noun)
a flatbottom boat for carrying heavy loads (especially on canals)	a small vessel for travel on water
	a dish (often boat-shaped) for serving gravy or sauce

barge (verb)	boat (verb)
push one's way	ride in a boat on water
transport by barge on a body of water