You know full well that you're full of it on this point. If you want to be understood to be referring to anything other than the series of wars between Christendom and Islam you will have to reference something other than merely "The Crusades." Merely referencing "The Crusades" will bring to mind to any educated person only the series of wars between Christendom and Islam, not other sorts of conflicts unrelated to the above. No one will assume you're referring to the crusade to cure cancer, to end drunk driving, the Albigensian Crusade, or anything else, unless you specify same.
We've discussed this enough that you know my favorite go to Crusade:
Albigensian Crusade. The Albigensian Crusade (1209–1229), or Cathar Crusade, was the first of the so-called religious crusades and was conducted against the Cathars in southern France. The 20-year campaign was successful.
One of the first actions, the massacre at Béziers, helped earn the crusade the title as "one of the most conclusive cases of genocide in religious history." After the military phase, the inquisition conducted by Gregory IX in 1234 all but eliminated the Cathars. Contemporaneous chronicles of the crusade include Peter of Vaux de Cernay's Historia Albigensis and Guillaume de Puylaurens' Cronica, both of which appear Guizot's Collection des mémoires relatifs à l'histoire de France (1823–1835). Thomas Fuller referred to it as a Holy war in his Historie of the Holy Warre
