attend vs advert

attend is not a noun while advert is a noun.

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

As verbs, attend and advert are synonyms defined as:

Other synonyms of attend include give ear, hang, pay heed.

attend (noun)	advert (noun)
	a public promotion of some product or service

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