route vs detour

route and detour both are nouns.

Word	Noun	Adjective	Verb	Adverb
route	Yes	No	Yes	No
detour	Yes	No	Yes	No

As nouns, detour is a hyponym of route; that is, detour is a word with a more specific, narrower meaning than route:

route: an open way (generally public) for travel or transportation
detour: a roundabout road (especially one that is used temporarily while a main route is blocked)

route (noun)	detour (noun)
an open way (generally public) for travel or transportation	a roundabout road (especially one that is used temporarily while a main route is blocked)
an established line of travel or access

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