Central America vs Central American

Central America and Central American both are nouns.

Word	Noun	Adjective	Verb	Adverb
Central America	Yes	No	No	No
Central American	Yes	Yes	No	No

Central America (noun)	Central American (noun)
the nations of Central America collectively	a native or inhabitant of Central America
the isthmus joining North America and South America; extends from the southern border of Mexico to the northern border of Colombia

Central America (adjective)	Central American (adjective)
	of or relating to or characteristic of Central America or its people or languages