tattletale vs taleteller

tattletale and taleteller both are nouns.

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

As nouns, tattletale and taleteller are synonyms defined as:

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

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