piffle vs gibber

piffle and gibber both are nouns.

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

As verbs, piffle and gibber are synonyms defined as:

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

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

piffle (noun)	gibber (noun)
trivial nonsense	unintelligible talking

piffle (verb)	gibber (verb)
act in a trivial or ineffective way	speak (about unimportant matters) rapidly and incessantly
speak (about unimportant matters) rapidly and incessantly	chatter inarticulately; of monkeys