detour vs divert

detour is a noun but divert is not a noun.

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

As verbs, divert is a hypernym of detour; that is, divert is a word with a broader meaning than detour:

Other hypernyms of detour include deviate.

detour (noun)	divert (noun)
a roundabout road (especially one that is used temporarily while a main route is blocked)

detour (verb)	divert (verb)
travel via a detour	turn aside; turn away from
	send on a course or in a direction different from the planned or intended one
	withdraw (money) and move into a different location, often secretly and with dishonest intentions
	occupy in an agreeable, entertaining or pleasant fashion