assist vs attend

assist is a noun but attend is not a noun.

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

As verbs, assist and attend are synonyms defined as:

Other synonyms of assist include attend to, serve, wait on.

As verbs, attend is a hyponym of assist; that is, attend is a word with a more specific, narrower meaning than assist:

assist (noun)	attend (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

assist (verb)	attend (verb)
act as an assistant in a subordinate or supportive function	give heed (to)
work for, or be a servant to	work for, or be a servant to
give help or assistance; be of service	take charge of or deal with
	be present at (meetings, church services, university), etc.
	to accompany as a circumstance or follow as a result