send off vs dispatch

send off is not a noun while dispatch is a noun.

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

As verbs, send off and dispatch are synonyms defined as:

Other synonyms of send off include despatch.

send off (noun)	dispatch (noun)
	the act of sending off something
	killing a person or animal
	the property of being prompt and efficient
	an official report (usually sent in haste)

send off (verb)	dispatch (verb)
transfer	kill without delay
throw, send, or cast forward	send away towards a designated goal
send away towards a designated goal	complete or carry out
	kill intentionally and with premeditation
	dispose of rapidly and without delay and efficiently