chatterer vs spouter

chatterer and spouter both are nouns.

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

As nouns, chatterer and spouter are synonyms defined as:

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

chatterer (noun)	spouter (noun)
passerine bird of New World tropics	a spouting whale
an obnoxious and foolish and loquacious talker	an oil well that is spouting
	an obnoxious and foolish and loquacious talker