Yukon River vs America

Yukon River and America both are nouns.

Word	Noun	Adjective	Verb	Adverb
Yukon River	Yes	No	No	No
America	Yes	No	No	No

Yukon River (noun)	America (noun)
a North American river that flows westward from the Yukon Territory through central Alaska to the Bering Sea	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
	North America and South America and Central America