twaddle vs gibber

twaddle and gibber both are nouns.

Word	Noun	Adjective	Verb	Adverb
twaddle	Yes	No	Yes	No
gibber	Yes	No	Yes	No

As verbs, twaddle and gibber are synonyms defined as:

twaddle and gibber: speak (about unimportant matters) rapidly and incessantly

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

twaddle (noun)	gibber (noun)
pretentious or silly talk or writing	unintelligible talking

twaddle (verb)	gibber (verb)
speak (about unimportant matters) rapidly and incessantly	speak (about unimportant matters) rapidly and incessantly
	chatter inarticulately; of monkeys