bundle off vs despatch

bundle off is not a noun while despatch is a noun.

Word	Noun	Adjective	Verb	Adverb
bundle off	No	No	Yes	No
despatch	Yes	No	Yes	No

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

Other hypernyms of bundle off include dispatch, send off.

bundle off (noun)	despatch (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)

bundle off (verb)	despatch (verb)
send off unceremoniously	send away towards a designated goal