dispatch vs departure

dispatch and departure both are nouns.

Word	Noun	Adjective	Verb	Adverb
dispatch	Yes	No	Yes	No
departure	Yes	No	No	No

As nouns, departure is a hypernym of dispatch; that is, departure is a word with a broader meaning than dispatch:

Other hypernyms of dispatch include going, going away, leaving.

dispatch (noun)	departure (noun)
the act of sending off something	the act of departing
killing a person or animal	euphemistic expressions for death
the property of being prompt and efficient	a variation that deviates from the standard or norm
an official report (usually sent in haste)

dispatch (verb)	departure (verb)
kill without delay
send away towards a designated goal
complete or carry out
kill intentionally and with premeditation
dispose of rapidly and without delay and efficiently