allude vs advert

allude is not a noun while advert is a noun.

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

As verbs, allude and advert are synonyms defined as:

Other synonyms of allude include touch.

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

allude (verb)	advert (verb)
make a more or less disguised reference to	make a more or less disguised reference to
	make reference to
	give heed (to)