packaging vs advert

packaging and advert both are nouns.

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

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

packaging: a message issued in behalf of some product or cause or idea or person or institution
advert: a public promotion of some product or service

packaging (noun)	advert (noun)
the business of packing	a public promotion of some product or service
material used to make packages
a message issued in behalf of some product or cause or idea or person or institution

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