route vs send off

route is a noun but send off is not a noun.

Word	Noun	Adjective	Verb	Adverb
route	Yes	No	Yes	No
send off	No	No	Yes	No

As verbs, send off is a hypernym of route; that is, send off is a word with a broader meaning than route:

Other hypernyms of route include despatch, dispatch.

route (noun)	send off (noun)
an open way (generally public) for travel or transportation
an established line of travel or access

route (verb)	send off (verb)
send via a specific route	transfer
divert in a specified direction	throw, send, or cast forward
send documents or materials to appropriate destinations	send away towards a designated goal