A death camp.

Systematic elimination of a race.

Treblinka was the second-deadliest extermination camp to be built and operated by Nazi Germany in occupied Poland during World War II.

Sobibor was an extermination camp built and operated by Nazi Germany as part of Operation Reinhard.

Belzec (English: or , Polish: ) was a Nazi German extermination camp in occupied Poland.

(or "extermination through work", ) a term that was adopted to describe forced labor in Nazi concentration camps whose inmates were held in inhumane conditions and suffered a high mortality rate; in some camps most prisoners died within a few months of incarceration.