babble vs babbler

babble and babbler both are nouns.

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

babble (noun)	babbler (noun)
gibberish resembling the sounds of a baby	any of various insectivorous Old World birds with a loud incessant song; in some classifications considered members of the family Muscicapidae
	an obnoxious and foolish and loquacious talker

babble (verb)	babbler (verb)
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