The Holocaust (/ˈhɒləkɔːst/ ⓘ),[1] known in Hebrew as the Shoah (שואה), was the genocide of European Jews during World War II. Between 1941 and 1945, Nazi Germany and its collaborators systematically murdered some six million Jews across German-occupied Europe, around two-thirds of Europe’s Jewish population. The murders were carried out primarily through mass shootings and poison gas in extermination camps, chiefly Auschwitz-Birkenau, Treblinka, Belzec, Sobibor, and Chełmno in occupied Poland. Separate Nazi persecutions killed a similar or larger number of non-Jewish civilians and prisoners of war (POWs); the term Holocaust is sometimes used to encompass also the persecution of these other groups.