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gulag vs. concentration camp

[goo-lahg] / ˈgu lɑg /

noun

(sometimes initial capital letter)
  1. the system of forced-labor camps in the Soviet Union.

  2. a Soviet forced-labor camp.

  3. any prison or detention camp, especially for political prisoners.

[kon-suhn-trey-shuhn kamp] / ˌkɒn sənˈtreɪ ʃən ˌkæmp /

noun

  1. a guarded compound for the mass detention without hearings or the imprisonment without trial of civilians, as refugees, members of ethnic minorities, political opponents, etc.

  2. a Nazi prison camp or death camp prior to and during World War II.