flyer vs aviator

flyer and aviator both are nouns.

Word	Noun	Adjective	Verb	Adverb
flyer	Yes	No	No	No
aviator	Yes	No	No	No

As nouns, flyer and aviator are synonyms defined as:

Other synonyms of flyer include aeronaut, flier.

flyer (noun)	aviator (noun)
an advertisement (usually printed on a page or in a leaflet) intended for wide distribution	someone who operates an aircraft
someone who travels by air
someone who operates an aircraft