combat pilot vs airplane pilot

combat pilot and airplane pilot both are nouns.

Word	Noun	Adjective	Verb	Adverb
combat pilot	Yes	No	No	No
airplane pilot	Yes	No	No	No

As nouns, airplane pilot is a hypernym of combat pilot; that is, airplane pilot is a word with a broader meaning than combat pilot:

combat pilot: airplane pilot who fights in an action between two military forces
airplane pilot: someone who is licensed to operate an aircraft in flight

Other hypernyms of combat pilot include pilot.

combat pilot (noun)	airplane pilot (noun)
airplane pilot who fights in an action between two military forces	someone who is licensed to operate an aircraft in flight