American spelling vs harbor

American spelling and harbor both are nouns.

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

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

American spelling (verb)	harbor (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)