Karl; The State of Palestine is recognised by 137 UN members, though historically it's a vague description of an area, there is no Palestine language.
Wiki says; "The term "Palestine" has been associated with the geographical area that currently covers the State of Israel, the West Bank and the Gaza Strip. General use of the term "Palestine" or related terms to the area at the southeast corner of the Mediterranean Sea beside Syria has historically been taking place since the times of Ancient Greece, with Herodotus writing of a "district of Syria, called Palaistine" in which Phoenicians interacted with other maritime peoples.
Some other terms that have been used to refer to all or part of the geographical region of "Palestine" include Canaan, Land of Israel (Eretz Yisrael or Ha'aretz), Greater Syria, the Holy Land, Iudaea Province, Judea, Coele-Syria, "Israel HaShlema", Kingdom of Israel, Kingdom of Jerusalem, Zion, Retenu (Ancient Egyptian), Southern Syria, Southern Levant and Syria Palaestina."
I have a photo of my Dad, RAF, WWII, standing in shorts in the desert, looking very handsome, with a pipe clenched between his teeth and on the back he wrote, "Convalescing in Palestine". I know not from what.