dissection vs post mortem

dissection

noun
  • a minute and detailed examination or analysis 

  • the act of dissecting, or something dissected 

  • surgical removal 

post mortem

noun
  • An investigation of a corpse to determine the cause of death. 

  • Any investigation after the conclusion of an activity, particularly when said activity produces an unwanted outcome. 

adj
  • Having been inflicted or having occurred after death. 

adv
  • Occurring after death. 

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