harbor vs American spelling

harbor and American spelling both are nouns.

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

harbor (noun)	American spelling (noun)
a place of refuge and comfort and security	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
a sheltered port where ships can take on or discharge cargo

harbor (verb)	American spelling (verb)
maintain (a theory, thoughts, or feelings)
hold back a thought or feeling about
keep in one's possession; of animals
secretly shelter (as of fugitives or criminals)