blurb vs packaging

blurb and packaging both are nouns.

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

As nouns, packaging is a hypernym of blurb; that is, packaging is a word with a broader meaning than blurb:

blurb: a promotional statement (as found on the dust jackets of books)
packaging: a message issued in behalf of some product or cause or idea or person or institution

Other hypernyms of blurb include promo, promotion, promotional material, publicity.

blurb (noun)	packaging (noun)
a promotional statement (as found on the dust jackets of books)	the business of packing
	material used to make packages
	a message issued in behalf of some product or cause or idea or person or institution