Foreign Devil

A crazy observation that I am unable to draw conclusions on...In many countries around the world the unkind word for foreign and often white people starts with a hard "g" sound. Examples: gaijin (Japan), girri (The Basque Country), gringo (Mexico) and gora (Pakistan). Forgive me I may have spelled some of these words incorrectly, I have only ever heard some of them and not seen them in print. But how strange is it that these four very different languages from different language families and different continents that have no similarites, whose ties and ideological exchanges would be very recent, especially the launguage of the Basque country that apparently has not ties to any other language on earth, to have all of these words start with the same sound can't be a coincidence, but I have no idea how they might be connected. Ponder.