blabber vs smatter

blabber is a noun but smatter is not a noun.

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

As verbs, smatter is a hyponym of blabber; that is, smatter is a word with a more specific, narrower meaning than blabber:

Other hyponyms of blabber include babble, blather, blether, blither.

blabber (noun)	smatter (noun)
one who reveals confidential information to the police or other authority

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