American spelling vs jousting armor

American spelling and jousting armor both are nouns.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
jousting armor	Yes	No	No	No

American spelling (noun)	jousting armor (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	a heavy plate armor not intended for free combat, produced in the late 15th to 16th century.