America vs North America

America and North America both are nouns.

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

America (noun)	North 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 the North American continent collectively
North America and South America and Central America	a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama