black humor vs American spelling

black humor and American spelling both are nouns.

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

black humor (noun)	American spelling (noun)
the juxtaposition of morbid and farcical elements (in writing or drama) to give a disturbing effect	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')