humor vs American spelling

humor and American spelling both are nouns.

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

humor (noun)	American spelling (noun)
the quality of being funny	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
the trait of appreciating (and being able to express) the humorous
the liquid parts of the body
(Middle Ages) one of the four fluids in the body whose balance was believed to determine your emotional and physical state
a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
a characteristic (habitual or relatively temporary) state of feeling

humor (verb)	American spelling (verb)
put into a good mood