advertising vs advert

advertising and advert both are nouns.

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

As nouns, advertising and advert are synonyms defined as:

Other synonyms of advertising include ad, advertisement, advertizement, advertizing.

advertising (noun)	advert (noun)
the business of drawing public attention to goods and services	a public promotion of some product or service
a public promotion of some product or service

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