Washington vs Columbia River

Washington and Columbia River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Washington	Yes	No	No	No
Columbia River	Yes	No	No	No

Washington (noun)	Columbia River (noun)
the federal government of the United States	a North American river; rises in southwestern Canada and flows southward across Washington to form the border between Washington and Oregon before emptying into the Pacific; known for its salmon runs in the spring
a state in northwestern United States on the Pacific with capital Olympia
the capital of the United States in the District of Columbia and a tourist mecca; George Washington commissioned Charles L'Enfant to lay out the city in 1791
1st President of the United States; commander-in-chief of the Continental Army during the American Revolution (1732-1799)
United States educator who was born a slave but became educated and founded a college at Tuskegee in Alabama (1856-1915)