gabble vs blabber

gabble and blabber both are nouns.

Word	Noun	Adjective	Verb	Adverb
gabble	Yes	No	Yes	No
blabber	Yes	No	Yes	No

As verbs, gabble and blabber are synonyms defined as:

gabble and blabber: speak (about unimportant matters) rapidly and incessantly

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

gabble (noun)	blabber (noun)
rapid and indistinct speech	one who reveals confidential information to the police or other authority

gabble (verb)	blabber (verb)
speak (about unimportant matters) rapidly and incessantly	speak (about unimportant matters) rapidly and incessantly