verbalization vs phraseology

verbalization and phraseology both are nouns.

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

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

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

verbalization (noun)	phraseology (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