yogurt vs American spelling

yogurt and American spelling both are nouns.

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

yogurt (noun)	American spelling (noun)
a custard-like food made from curdled milk	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')