talebearer vs blabbermouth

talebearer and blabbermouth both are nouns.

Word	Noun	Adjective	Verb	Adverb
talebearer	Yes	No	No	No
blabbermouth	Yes	No	No	No

As nouns, talebearer and blabbermouth are synonyms defined as:

Other synonyms of talebearer include taleteller, tattler, tattletale, telltale.

talebearer (noun)	blabbermouth (noun)
someone who gossips indiscreetly	someone who gossips indiscreetly