let the cat out of the bag vs babble

let the cat out of the bag is not a noun while babble is a noun.

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

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

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

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

let the cat out of the bag (noun)	babble (noun)
	gibberish resembling the sounds of a baby

let the cat out of the bag (verb)	babble (verb)
divulge confidential information or secrets	to talk foolishly
	divulge confidential information or secrets
	utter meaningless sounds, like a baby, or utter in an incoherent way
	flow in an irregular current with a bubbling noise