attend vs assist

attend is not a noun while assist is a noun.

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

As verbs, attend and assist are synonyms defined as:

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

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

Other hypernyms of attend include aid, help.

attend (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

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