catastrophe vs obedience

catastrophe

noun
  • A disaster beyond expectations. 

  • Any large and disastrous event of great significance. 

  • The dramatic event that initiates the resolution of the plot; the dénouement. 

  • A type of bifurcation, where a system shifts between two stable states. 

obedience

noun
  • The collective body of persons subject to any particular authority. 

  • A written instruction from the superior of an order to those under him. 

  • Any official position under an abbot's jurisdiction. 

  • The quality of being obedient. 

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