babble vs smatter

babble is a noun but smatter is not a noun.

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

As verbs, babble and smatter are synonyms defined as:

Other synonyms of babble include blather, blether, blither.

babble (noun)	smatter (noun)
gibberish resembling the sounds of a baby

babble (verb)	smatter (verb)
to talk foolishly	speak with spotty or superficial knowledge
divulge confidential information or secrets	to talk foolishly
utter meaningless sounds, like a baby, or utter in an incoherent way	work with in an amateurish manner
flow in an irregular current with a bubbling noise