* American Bison: The species found in North America is called American bison or American buffalo.
* European Bison: The species found in Europe is called European bison, European wood bison, or wisent.
* Water Buffalo: This is a completely different species of buffalo found in Asia and Africa.
So, while "buffalo" is a common name for bison, it's more accurate to call them American bison or European bison to avoid confusion.