blab vs tittle-tattle

blab is not a noun while tittle-tattle is a noun.

Word	Noun	Adjective	Verb	Adverb
blab	No	No	Yes	No
tittle-tattle	Yes	No	Yes	No

As verbs, blab and tittle-tattle are synonyms defined as:

blab and tittle-tattle: speak (about unimportant matters) rapidly and incessantly

Other synonyms of blab include blabber, chatter, clack, gabble, gibber, maunder, palaver, piffle, prate, prattle, tattle, twaddle.

blab (noun)	tittle-tattle (noun)
	light informal conversation for social occasions

blab (verb)	tittle-tattle (verb)
divulge confidential information or secrets	speak (about unimportant matters) rapidly and incessantly
speak (about unimportant matters) rapidly and incessantly