America vs Central America

America and Central America both are nouns.

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

America (noun)	Central America (noun)
North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776	the nations of Central America collectively
North America and South America and Central America	the isthmus joining North America and South America; extends from the southern border of Mexico to the northern border of Colombia