American spelling vs vigor

American spelling and vigor both are nouns.

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

American spelling (noun)	vigor (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	active strength of body or mind
	an imaginative lively style (especially style of writing)
	forceful exertion