babbler vs chatterer

babbler and chatterer both are nouns.

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

As nouns, babbler and chatterer are synonyms defined as:

Other synonyms of babbler include chatterbox, magpie, prater, spouter.

babbler (noun)	chatterer (noun)
any of various insectivorous Old World birds with a loud incessant song; in some classifications considered members of the family Muscicapidae	passerine bird of New World tropics
an obnoxious and foolish and loquacious talker	an obnoxious and foolish and loquacious talker