dredge up vs advert

dredge up is not a noun while advert is a noun.

Word	Noun	Adjective	Verb	Adverb
dredge up	No	No	Yes	No
advert	Yes	No	Yes	No

As verbs, advert is a hypernym of dredge up; that is, advert is a word with a broader meaning than dredge up:

Other hypernyms of dredge up include bring up, cite, mention, name, refer.

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

dredge up (verb)	advert (verb)
mention something unpleasant from the past	make a more or less disguised reference to
	make reference to
	give heed (to)