"While the communities have some similarities, Alawites in Turkey
are people of Arab origin whereas Alevis are ethnic Turks or Kurds who mainly
live in central Anatolia. Long persecuted by the Sunni-dominated state in Turkey
and the Ottoman Empire before that, many Alevis have chosen to assimilate,
making their numbers hard to estimate, and the community has fallen victim to
several massacres in history." (thanks Amir)