divert vs detour

divert is not a noun while detour is a noun.

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

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

Other hyponyms of divert include yaw, depart, digress, sidetrack, straggle.

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

divert (verb)	detour (verb)
turn aside; turn away from	travel via a detour
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