fighter aircraft vs fighter

fighter aircraft and fighter both are nouns.

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

As nouns, fighter aircraft and fighter are synonyms defined as:

fighter aircraft and fighter: a high-speed military or naval airplane designed to destroy enemy aircraft in the air

Other synonyms of fighter aircraft include attack aircraft.

fighter aircraft (noun)	fighter (noun)
a high-speed military or naval airplane designed to destroy enemy aircraft in the air	a high-speed military or naval airplane designed to destroy enemy aircraft in the air
	someone who fights (or is fighting)
	someone who fights for a cause