blurb vs endorsement

blurb and endorsement both are nouns.

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

As nouns, blurb and endorsement are synonyms defined as:

blurb and endorsement: a promotional statement (as found on the dust jackets of books)

Other synonyms of blurb include indorsement.

blurb (noun)	endorsement (noun)
a promotional statement (as found on the dust jackets of books)	the act of endorsing
	formal and explicit approval
	a promotional statement (as found on the dust jackets of books)
	a speech seconding a motion
	a signature that validates something