tittle-tattle vs clack

tittle-tattle and clack both are nouns.

Word	Noun	Adjective	Verb	Adverb
tittle-tattle	Yes	No	Yes	No
clack	Yes	No	Yes	No

As verbs, tittle-tattle and clack are synonyms defined as:

tittle-tattle and clack: speak (about unimportant matters) rapidly and incessantly

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

tittle-tattle (noun)	clack (noun)
light informal conversation for social occasions	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

tittle-tattle (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