American spelling vs depolarization

American spelling and depolarization both are nouns.

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

American spelling (noun)	depolarization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	a loss of polarity or polarization