smatter vs prattle

smatter is not a noun while prattle is a noun.

Word	Noun	Adjective	Verb	Adverb
smatter	No	No	Yes	No
prattle	Yes	No	Yes	No

As verbs, prattle is a hypernym of smatter; that is, prattle is a word with a broader meaning than smatter:

Other hypernyms of smatter include blab, blabber, chatter, clack, gabble, gibber, maunder, palaver, piffle, prate, tattle, tittle-tattle, twaddle.

smatter (noun)	prattle (noun)
	idle or foolish and irrelevant talk

smatter (verb)	prattle (verb)
speak with spotty or superficial knowledge	speak (about unimportant matters) rapidly and incessantly
to talk foolishly
work with in an amateurish manner