dispatch vs leaving

dispatch and leaving both are nouns.

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

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

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

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

dispatch (verb)	leaving (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