How many Principality's are the in the world?

The term is also sometimes used as a generic term for any monarchy, especially for other small sovereign states ruled by a Monarch of a lesser rank (compare Fürst) than King, for instance grand duchies, whose monarch is a Grand Duke or Duchess. No sovereign duchy currently exists, but Luxembourg is a surviving example of a sovereign grand duchy. Historically there have been sovereign principalities of many ruler styles, such as countships, margraviates and even Lordships.