duration vs hard stop

duration

noun
  • The time taken for the current situation to end, especially the current war 

  • An amount of time or a particular time interval. 

  • A measure of the sensitivity of the price of a financial asset to changes in interest rates, computed for a simple bond as a weighted average of the maturities of the interest and principal payments associated with it. 

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 

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