taleteller vs blabbermouth

taleteller and blabbermouth both are nouns.

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

As nouns, taleteller and blabbermouth are synonyms defined as:

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

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