confab vs tittle-tattle

confab and tittle-tattle both are nouns.

Word	Noun	Adjective	Verb	Adverb
confab	Yes	No	Yes	No
tittle-tattle	Yes	No	Yes	No

As nouns, tittle-tattle is a hyponym of confab; that is, tittle-tattle is a word with a more specific, narrower meaning than confab:

confab (noun)	tittle-tattle (noun)
an informal conversation	light informal conversation for social occasions

confab (verb)	tittle-tattle (verb)
talk socially without exchanging too much information	speak (about unimportant matters) rapidly and incessantly
have a conference in order to talk something over