blether vs babble

blether and babble both are nouns.

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

As verbs, blether and babble are synonyms defined as:

Other synonyms of blether include blather, blither, smatter.

blether (noun)	babble (noun)
idle or foolish and irrelevant talk	gibberish resembling the sounds of a baby

blether (verb)	babble (verb)
to talk foolishly	to talk foolishly
	divulge confidential information or secrets
	utter meaningless sounds, like a baby, or utter in an incoherent way
	flow in an irregular current with a bubbling noise