prison vs sweatbox

prison

noun
  • Confinement in prison. 

  • A place or institution where people are held against their will, especially for long-term confinement of those awaiting trial or convicted of serious crimes or otherwise considered undesirable by the government. 

  • Any restrictive environment, such as a harsh academy or home. 

verb
  • To imprison. 

sweatbox

noun
  • A jail cell. 

  • The review process that takes place in a sweat box. 

  • A small overheated cell or room used for solitary confinement or torture. 

  • A small nightclub packed to capacity where people get hot and sweaty. 

  • Any box or boxlike structure used to induce sweating, such as of hides or tobacco 

  • A compartment in a police van to hold a prisoner being transported. 

  • The room where a scene is reviewed. 

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