con artist vs gouger

con artist and gouger both are nouns.

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

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

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

con artist (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