overcharge vs gouge

overcharge and gouge both are nouns.

Word	Noun	Adjective	Verb	Adverb
overcharge	Yes	No	Yes	No
gouge	Yes	No	Yes	No

As verbs, gouge is a hyponym of overcharge; that is, gouge is a word with a more specific, narrower meaning than overcharge:

Other hyponyms of overcharge include extort, rack, squeeze, wring.

overcharge (noun)	gouge (noun)
a price that is too high	the act of gouging
	and edge tool with a blade like a trough for cutting channels or grooves
	an impression in a surface (as made by a blow)

overcharge (verb)	gouge (verb)
place too much a load on	force with the thumb
rip off; ask an unreasonable price	make a groove in
	obtain by coercion or intimidation