Lake on SC/GA Border has 2 namesNovember 20 2002 at 8:53 PM
Response to Tibetan vs. Nepalese vs. Chinese names
I may be wrong but I was told by my brothers in SC that the man-made lake on the Savannah River - South Carolinians call it J. Strom Thurmond Lake and it's called something else on the Georgia side.
And in Mexico, the Rio Grande is Rio Bravo.
So yeah, 2 names for geographic locations do & can exist with out confusion.