maunder vs babble

maunder is not a noun while babble is a noun.

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

As verbs, babble is a hyponym of maunder; that is, babble is a word with a more specific, narrower meaning than maunder:

Other hyponyms of maunder include blather, blether, blither, smatter.

maunder (noun)	babble (noun)
	gibberish resembling the sounds of a baby

maunder (verb)	babble (verb)
talk indistinctly; usually in a low voice	to talk foolishly
speak (about unimportant matters) rapidly and incessantly	divulge confidential information or secrets
wander aimlessly	utter meaningless sounds, like a baby, or utter in an incoherent way
	flow in an irregular current with a bubbling noise