victor vs fighter

victor and fighter both are nouns.

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

As nouns, fighter is a hypernym of victor; that is, fighter is a word with a broader meaning than victor:

Other hypernyms of victor include battler, belligerent, combatant, scrapper.

victor (noun)	fighter (noun)
the contestant who wins the contest	a high-speed military or naval airplane designed to destroy enemy aircraft in the air
a combatant who is able to defeat rivals	someone who fights (or is fighting)
	someone who fights for a cause