death march vs trample

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. 

trample

noun
  • The sound of heavy footsteps. 

  • A heavy stepping. 

verb
  • To crush something by walking on it. 

  • To treat someone harshly. 

  • To walk heavily and destructively. 

  • To cause emotional injury as if by trampling. 

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