death march vs walkout

death march

noun
  • A forced movement of people, on foot, in such circumstances that many die during the journey. 

  • Synonym of dead march (“mournful music for a funeral etc.”) 

  • A project that requires a stretch of unsustainable overwork, or whose participants feel it is destined to fail. 

walkout

noun
  • A similar mass action of people leaving a place as a form of protest. 

  • A sudden stoppage of work. 

  • A part of the squat exercise wherein one has to step out from the rack (“walk out” the weight) in order not to hit it during execution. 

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