American spelling vs skin color

American spelling and skin color both are nouns.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
skin color	Yes	No	No	No

American spelling (noun)	skin color (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	the coloring of a person's face