Saint Elias Mountains vs Yukon

Saint Elias Mountains and Yukon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint Elias Mountains	Yes	No	No	No
Yukon	Yes	No	No	No

Saint Elias Mountains (noun)	Yukon (noun)
a range of mountains between Alaska and the Yukon territory	a territory in northwestern Canada; site of the Klondike gold rush in the 1890s
	a North American river that flows westward from the Yukon Territory through central Alaska to the Bering Sea