babbler vs chatterbox

babbler and chatterbox both are nouns.

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

As nouns, babbler and chatterbox are synonyms defined as:

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

babbler (noun)	chatterbox (noun)
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
an obnoxious and foolish and loquacious talker	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