vigor vs American spelling

vigor and American spelling both are nouns.

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

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