attend vs attendance

attend is not a noun while attendance is a noun.

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

attend (noun)	attendance (noun)
	the act of being present (at a meeting or event etc.)
	the number of people that are present
	the frequency with which a person is present

attend (verb)	attendance (verb)
give heed (to)
work for, or be a servant to
take charge of or deal with
be present at (meetings, church services, university), etc.
to accompany as a circumstance or follow as a result