maunder vs blabber

maunder is not a noun while blabber is a noun.

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

As verbs, maunder and blabber are synonyms defined as:

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

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

maunder (noun)	blabber (noun)
	one who reveals confidential information to the police or other authority

maunder (verb)	blabber (verb)
talk indistinctly; usually in a low voice	speak (about unimportant matters) rapidly and incessantly
speak (about unimportant matters) rapidly and incessantly
wander aimlessly