American spelling vs belabor

American spelling is a noun but belabor is not a noun.

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

American spelling (noun)	belabor (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')

American spelling (verb)	belabor (verb)
	attack verbally with harsh criticism
	beat soundly
	to work at or to absurd length