vocalize vs vocalization

vocalize is not a noun while vocalization is a noun.

Word	Noun	Adjective	Verb	Adverb
vocalize	No	No	Yes	No
vocalization	Yes	No	No	No

vocalize (noun)	vocalization (noun)
	the sound made by the vibration of vocal folds modified by the resonance of the vocal tract
	the use of uttered sounds for auditory communication

vocalize (verb)	vocalization (verb)
pronounce as a vowel
express or state clearly
utter with vibrating vocal chords
utter speech sounds
sing (each note a scale or in a melody) with the same vowel