prate vs maunder

prate is a noun but maunder is not a noun.

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

As verbs, prate and maunder are synonyms defined as:

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

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

prate (noun)	maunder (noun)
idle or foolish and irrelevant talk

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