American spelling vs reharmonization

American spelling and reharmonization both are nouns.

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

American spelling (noun)	reharmonization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	a piece of music whose original harmony has been revised