despatch vs expedition

despatch and expedition both are nouns.

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

As nouns, despatch and expedition are synonyms defined as:

Other synonyms of despatch include dispatch, expeditiousness.

despatch (noun)	expedition (noun)
the act of sending off something	a journey organized for a particular purpose
killing a person or animal	a military campaign designed to achieve a specific objective in a foreign country
the property of being prompt and efficient	a journey taken for pleasure
an official report (usually sent in haste)	the property of being prompt and efficient
	an organized group of people undertaking a journey for a particular purpose

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