blabber vs clack

blabber and clack both are nouns.

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

As verbs, blabber and clack are synonyms defined as:

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

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

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

blabber (verb)	clack (verb)
speak (about unimportant matters) rapidly and incessantly	speak (about unimportant matters) rapidly and incessantly
	make a clucking sounds, characteristic of hens
	make a rattling sound