gibber vs twaddle

gibber and twaddle both are nouns.

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

As verbs, gibber and twaddle are synonyms defined as:

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

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

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

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