masculinization vs American spelling

masculinization and American spelling both are nouns.

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

masculinization (noun)	American spelling (noun)
the abnormal development of male sexual characteristics in a female (usually as the result of hormone therapies or adrenal malfunction)	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')