Charles III
1 of 4biographical name (1)
ˈchär(-ə)lz 
1948– son of Elizabeth II king of Great Britain (2022– )
Charles
2 of 4biographical name (2)
1771–1847 archduke of Austria
Charles
3 of 4biographical name (3)
Prince 1903–1983 brother of King Leopold III regent of Belgium (1944–50)
Charles
4 of 4geographical name
ˈchär(-ə)lz
river 47 miles (76 kilometers) long in Massachusetts flowing into Boston harbor
Note: The estuary of the Charles River separates Boston and Cambridge.