touch on vs advert

touch on is not a noun while advert is a noun.

Word	Noun	Adjective	Verb	Adverb
touch on	No	No	Yes	No
advert	Yes	No	Yes	No

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

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

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

touch on (verb)	advert (verb)
restore by replacing a part or putting together what is torn or broken	make a more or less disguised reference to
have an effect upon	make reference to
refer to or discuss briefly	give heed (to)
be relevant to