fighter vs gouger

fighter and gouger both are nouns.

Word	Noun	Adjective	Verb	Adverb
fighter	Yes	No	No	No
gouger	Yes	No	No	No

As nouns, gouger is a hyponym of fighter; that is, gouger is a word with a more specific, narrower meaning than fighter:

fighter (noun)	gouger (noun)
a high-speed military or naval airplane designed to destroy enemy aircraft in the air	a person who swindles you by means of deception or fraud
someone who fights (or is fighting)	an attacker who gouges out the antagonist's eye
someone who fights for a cause