despatch vs quickness

despatch and quickness both are nouns.

Word	Noun	Adjective	Verb	Adverb
despatch	Yes	No	Yes	No
quickness	Yes	No	No	No

As nouns, quickness is a hypernym of despatch; that is, quickness is a word with a broader meaning than despatch:

Other hypernyms of despatch include celerity, rapidity, rapidness, speediness.

despatch (noun)	quickness (noun)
the act of sending off something	a rate that is rapid
killing a person or animal	intelligence as revealed by an ability to give correct responses without delay
the property of being prompt and efficient	skillful performance or ability without difficulty
an official report (usually sent in haste)

despatch (verb)	quickness (verb)
send away towards a designated goal