Leavenworth vs gulag

Leavenworth

name
  • A surname. 

  • A city, the county seat of Leavenworth County, Kansas. 

  • A town in Indiana; named for founders Zebulon and Seth Leavenworth. 

  • A city in Washington. 

  • An unincorporated community in Minnesota; named for American soldier Henry Leavenworth. 

gulag

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

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. 

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