American English vs checker

American English and checker both are nouns.

Word	Noun	Adjective	Verb	Adverb
American English	Yes	No	No	No
checker	Yes	No	Yes	No

American English (noun)	checker (noun)
the English language as used in the United States	one of the flat round pieces used in playing the game of checkers
	one who checks the correctness of something
	an attendant who checks coats or baggage

American English (verb)	checker (verb)
	variegate with different colors, shades, or patterns
	mark into squares or draw squares on; draw crossed lines on