look you do not understand latin obviously so let me give you a intro course. There are TWO different major latin dialects. There is Roman Latin (what you think of as latin, the roman empire), and there is ecclesiastical latin (church latin)

Urban took a word and perverted it from original latin and used it in church latin. You should analyze word origin more.......

Plus the original crusade was caused by fanatical seljuk turks. not saying it was right but there you go