think of vs advert

think of is not a noun while advert is a noun.

Word	Noun	Adjective	Verb	Adverb
think of	No	No	Yes	No
advert	Yes	No	Yes	No

As verbs, advert is a hyponym of think of; that is, advert is a word with a more specific, narrower meaning than think of:

Other hyponyms of think of include bring up, cite, mention, name, refer.

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

think of (verb)	advert (verb)
keep in mind for attention or consideration	make a more or less disguised reference to
look on as or consider	make reference to
intend to refer to	give heed (to)
take into consideration, have in view
choose in one's mind
devise or invent