blether vs prattle

blether and prattle both are nouns.

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

As nouns, blether and prattle are synonyms defined as:

Other synonyms of blether include chin music, idle talk, prate.

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

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

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

blether (verb)	prattle (verb)
to talk foolishly	speak (about unimportant matters) rapidly and incessantly