con man vs gouger

con man and gouger both are nouns.

Word	Noun	Adjective	Verb	Adverb
con man	Yes	No	No	No
gouger	Yes	No	No	No

As nouns, gouger is a hypernym of con man; that is, gouger is a word with a broader meaning than con man:

Other hypernyms of con man include chiseler, chiseller, defrauder, grifter, scammer, swindler.

con man (noun)	gouger (noun)
a swindler who exploits the confidence of his victim	a person who swindles you by means of deception or fraud
	an attacker who gouges out the antagonist's eye