gulag vs jail

gulag

noun
  • A prison camp, especially one used to hold political prisoners. 

  • Also GULAG: the system of all Soviet labour camps and prisons in use, especially during the Stalinist period (1930s–1950s). 

  • A place where, or political system in which, people with dissident views are routinely oppressed. 

verb
  • To compel (someone) into a forced labour camp or a similar place of confinement or exile. 

jail

noun
  • Confinement in a jail. 

  • In dodgeball and related games, the area where players who have been struck by the ball are confined. 

  • A kind of sandbox for running a guest operating system instance. 

  • A place or institution for the confinement of persons held against their will in lawful custody or detention, especially (in US usage) a place where people are held for minor offenses or with reference to some future judicial proceeding. 

  • The condition created by the requirement that a horse claimed in a claiming race not be run at another track for some period of time (usually 30 days). 

verb
  • To imprison. 

How often have the words gulag and jail occurred in a corpus of books? (source: Google Ngram Viewer )