hard stop vs terminus

hard stop

noun
  • A definite time when someone must end a task in order to meet another time commitment. 

  • A mechanical device that limits the travel of a mechanism. 

  • A tactic used by armed police to stop a vehicle believed to contain dangerous criminals. 

  • Synonym of full stop 

terminus

noun
  • The end or final point of something. 

  • A boundary or border, or a post or stone marking such a boundary. 

  • The end point of a transportation system, or the town or city in which it is located. 

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