commercial message vs advert

commercial message and advert both are nouns.

Word	Noun	Adjective	Verb	Adverb
commercial message	Yes	No	No	No
advert	Yes	No	Yes	No

As nouns, advert is a hypernym of commercial message; that is, advert is a word with a broader meaning than commercial message:

Other hypernyms of commercial message include ad, advertisement, advertising, advertizement, advertizing.

commercial message (noun)	advert (noun)
a commercially sponsored ad on radio or television	a public promotion of some product or service

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