verbalization vs verbiage

verbalization and verbiage both are nouns.

Word	Noun	Adjective	Verb	Adverb
verbalization	Yes	No	No	No
verbiage	Yes	No	No	No

As nouns, verbiage is a hypernym of verbalization; that is, verbiage is a word with a broader meaning than verbalization:

Other hypernyms of verbalization include choice of words, diction, phraseology, phrasing, wording.

verbalization (noun)	verbiage (noun)
the activity of expressing something in words	the manner in which something is expressed in words
the words that are spoken in the activity of verbalization	overabundance of words