Potomac vs Virginia

Potomac and Virginia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Potomac	Yes	No	No	No
Virginia	Yes	No	No	No

Potomac (noun)	Virginia (noun)
term sometimes used to refer to Washington, D.C.	a state in the eastern United States; one of the original 13 colonies; one of the Confederate States in the American Civil War
a river in the east central United States; rises in West Virginia in the Appalachian Mountains and flows eastward, forming the boundary between Maryland and Virginia, to the Chesapeake Bay	one of the British colonies that formed the United States, with capital Jamestown or Williamsburg
	a town in northeastern Minnesota in the heart of the Mesabi Range