fighter aircraft vs attack aircraft

fighter aircraft and attack aircraft both are nouns.

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

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

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

Other synonyms of fighter aircraft include fighter.

fighter aircraft (noun)	attack aircraft (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