fighter vs butter

fighter and butter both are nouns.

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

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

fighter (noun)	butter (noun)
a high-speed military or naval airplane designed to destroy enemy aircraft in the air	an edible emulsion of fat globules made by churning milk or cream; for cooking and table use
someone who fights (or is fighting)	a fighter who strikes the opponent with his head
someone who fights for a cause

fighter (verb)	butter (verb)
	spread butter on