babble vs verbalize

babble is a noun but verbalize is not a noun.

Word	Noun	Adjective	Verb	Adverb
babble	Yes	No	Yes	No
verbalize	No	No	Yes	No

As verbs, verbalize is a hypernym of babble; that is, verbalize is a word with a broader meaning than babble:

babble: utter meaningless sounds, like a baby, or utter in an incoherent way
verbalize: express in speech

Other hypernyms of babble include mouth, speak, talk, utter, verbalise.

babble (noun)	verbalize (noun)
gibberish resembling the sounds of a baby

babble (verb)	verbalize (verb)
to talk foolishly	convert into a verb
divulge confidential information or secrets	express in speech
utter meaningless sounds, like a baby, or utter in an incoherent way	be verbose
flow in an irregular current with a bubbling noise	articulate; either verbally or with a cry, shout, or noise