vocalization vs American spelling

vocalization and American spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
vocalization	Yes	No	No	No
American spelling	Yes	No	No	No

vocalization (noun)	American spelling (noun)
the sound made by the vibration of vocal folds modified by the resonance of the vocal tract	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
the use of uttered sounds for auditory communication