What is the difference between gulags & kulaks

Gulag, acronym of Glavnoye Upravleniye Ispravitelno-Trudovykh Lagerey, (Russian: "Chief Administration of Corrective Labour Camps"), system of Soviet labour camps and accompanying detention and transit camps and prisons that from the 1920s to the mid-1950s housed the political prisoners and criminals of the Soviet

Kulaks a peasant in Russia wealthy enough to own a farm and hire labor. Emerging after the emancipation of serfs in the 19th century the kulaks resisted Stalin's forced collectivization, but millions were arrested, exiled, or killed.