Central America vs North America

Central America and North America both are nouns.

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

Central America (noun)	North America (noun)
the nations of Central America collectively	the nations of the North American continent collectively
the isthmus joining North America and South America; extends from the southern border of Mexico to the northern border of Colombia	a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama