maunder vs clack

maunder is not a noun while clack is a noun.

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

As verbs, maunder and clack are synonyms defined as:

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

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

maunder (noun)	clack (noun)
	a simple valve with a hinge on one side; allows fluid to flow in only one direction
	a sharp abrupt noise as if two objects hit together; may be repeated

maunder (verb)	clack (verb)
talk indistinctly; usually in a low voice	speak (about unimportant matters) rapidly and incessantly
speak (about unimportant matters) rapidly and incessantly	make a clucking sounds, characteristic of hens
wander aimlessly	make a rattling sound