air lane vs route

air lane and route both are nouns.

Word	Noun	Adjective	Verb	Adverb
air lane	Yes	No	No	No
route	Yes	No	Yes	No

As nouns, route is a hypernym of air lane; that is, route is a word with a broader meaning than air lane:

air lane: a designated route followed by airplanes in flying from one airport to another
route: an established line of travel or access

Other hypernyms of air lane include itinerary, path.

air lane (noun)	route (noun)
a designated route followed by airplanes in flying from one airport to another	an open way (generally public) for travel or transportation
	an established line of travel or access

air lane (verb)	route (verb)
	send via a specific route
	divert in a specified direction
	send documents or materials to appropriate destinations