pass over vs aviation

pass over is not a noun while aviation is a noun.

Word	Noun	Adjective	Verb	Adverb
pass over	No	No	Yes	No
aviation	Yes	No	No	No

pass over (noun)	aviation (noun)
	travel via aircraft
	the art of operating aircraft
	the aggregation of a country's military aircraft
	the operation of aircraft to provide transportation

pass over (verb)	aviation (verb)
bypass
rub with a circular motion
travel across or pass over
make a passage or journey from one place to another
fly over