railway line vs route

railway line and route both are nouns.

Word	Noun	Adjective	Verb	Adverb
railway line	Yes	No	No	No
route	Yes	No	Yes	No

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

Other hypernyms of railway line include road.

railway line (noun)	route (noun)
the road consisting of railroad track and roadbed	an open way (generally public) for travel or transportation
line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight	an established line of travel or access

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