tattle vs let the cat out of the bag

tattle is a noun but let the cat out of the bag is not a noun.

Word	Noun	Adjective	Verb	Adverb
tattle	Yes	No	Yes	No
let the cat out of the bag	No	No	Yes	No

As verbs, tattle and let the cat out of the bag are synonyms defined as:

tattle and let the cat out of the bag: divulge confidential information or secrets

Other synonyms of tattle include babble, babble out, blab, blab out, peach, sing, spill the beans, talk.

tattle (noun)	let the cat out of the bag (noun)
disclosing information or giving evidence about another

tattle (verb)	let the cat out of the bag (verb)
speak (about unimportant matters) rapidly and incessantly	divulge confidential information or secrets
divulge confidential information or secrets