expedite vs assist

expedite is not a noun while assist is a noun.

Word	Noun	Adjective	Verb	Adverb
expedite	No	No	Yes	No
assist	Yes	No	Yes	No

As verbs, assist is a hypernym of expedite; that is, assist is a word with a broader meaning than expedite:

Other hypernyms of expedite include aid, help.

expedite (noun)	assist (noun)
	(sports) the act of enabling another player to make a good play
	the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose

expedite (verb)	assist (verb)
speed up the progress of; facilitate	act as an assistant in a subordinate or supportive function
process fast and efficiently	work for, or be a servant to
	give help or assistance; be of service