American spelling vs specialty

American spelling and specialty both are nouns.

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

American spelling (noun)	specialty (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	the special line of work you have adopted as your career
	a distinguishing trait
	an asset of special worth or utility