fixate vs advert

fixate is not a noun while advert is a noun.

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

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

Other hypernyms of fixate include attend, give ear, hang, pay heed.

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

fixate (verb)	advert (verb)
become fixed (on)	make a more or less disguised reference to
make fixed, stable or stationary	make reference to
pay attention to exclusively and obsessively	give heed (to)
attach (oneself) to a person or thing in a neurotic way