chatterbox vs babbler

chatterbox and babbler both are nouns.

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

As nouns, chatterbox and babbler are synonyms defined as:

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

chatterbox (noun)	babbler (noun)
an obnoxious and foolish and loquacious talker	any of various insectivorous Old World birds with a loud incessant song; in some classifications considered members of the family Muscicapidae
orchid growing along streams or ponds of western North America having leafy stems and 1 greenish-brown and pinkish flower in the axil of each upper leaf	an obnoxious and foolish and loquacious talker