Carolin :: Carolin (n.) A former gold coin of Germany worth nearly five dollars; also, a gold coin of Sweden worth nearly five dollars..
Caroline :: Caroline (n.) A silver coin once current in some parts of Italy, worth about seven cents..
Caroling :: Caroling (n.) A song of joy or devotion; a singing, as of carols..
Carolinian :: Carolinian (n.) A native or inhabitant of north or South Carolina.