airplane pilot vs flyer

airplane pilot and flyer both are nouns.

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

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

Other hypernyms of airplane pilot include aeronaut, aviator, flier.

airplane pilot (noun)	flyer (noun)
someone who is licensed to operate an aircraft in flight	an advertisement (usually printed on a page or in a leaflet) intended for wide distribution
	someone who travels by air
	someone who operates an aircraft