barge vs lighter

barge and lighter both are nouns.

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

As nouns, barge and lighter are synonyms defined as:

barge and lighter: a flatbottom boat for carrying heavy loads (especially on canals)

Other synonyms of barge include flatboat, hoy.

barge (noun)	lighter (noun)
a flatbottom boat for carrying heavy loads (especially on canals)	a device for lighting or igniting fuel or charges or fires
	a flatbottom boat for carrying heavy loads (especially on canals)
	a substance used to ignite or kindle a fire

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