gabble vs babble

gabble and babble both are nouns.

Word	Noun	Adjective	Verb	Adverb
gabble	Yes	No	Yes	No
babble	Yes	No	Yes	No

As verbs, babble is a hyponym of gabble; that is, babble is a word with a more specific, narrower meaning than gabble:

Other hyponyms of gabble include blather, blether, blither, smatter.

gabble (noun)	babble (noun)
rapid and indistinct speech	gibberish resembling the sounds of a baby

gabble (verb)	babble (verb)
speak (about unimportant matters) rapidly and incessantly	to talk foolishly
	divulge confidential information or secrets
	utter meaningless sounds, like a baby, or utter in an incoherent way
	flow in an irregular current with a bubbling noise