prattle vs verbalise

prattle is a noun but verbalise is not a noun.

Word	Noun	Adjective	Verb	Adverb
prattle	Yes	No	Yes	No
verbalise	No	No	Yes	No

As verbs, verbalise is a hypernym of prattle; that is, verbalise is a word with a broader meaning than prattle:

Other hypernyms of prattle include mouth, speak, talk, utter, verbalize.

prattle (noun)	verbalise (noun)
idle or foolish and irrelevant talk

prattle (verb)	verbalise (verb)
speak (about unimportant matters) rapidly and incessantly	convert into a verb
	express in speech
	be verbose
	articulate; either verbally or with a cry, shout, or noise