blether vs tattle

blether and tattle both are nouns.

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

As verbs, tattle is a hypernym of blether; that is, tattle is a word with a broader meaning than blether:

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

blether (noun)	tattle (noun)
idle or foolish and irrelevant talk	disclosing information or giving evidence about another

blether (verb)	tattle (verb)
to talk foolishly	speak (about unimportant matters) rapidly and incessantly
	divulge confidential information or secrets