American spelling vs balk

American spelling and balk both are nouns.

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

American spelling (noun)	balk (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	an illegal pitching motion while runners are on base
	one of several parallel sloping beams that support a roof
	something immaterial that interferes with or delays action or progress
	the area on a billiard table behind the balkline

American spelling (verb)	balk (verb)
	refuse to comply