observation vs post mortem

observation

noun
  • A judgement based on observing. 

  • The act of noting and recording some event; or the record of such noting. 

  • A remark or comment. 

  • A realization of a random variable. 

  • Performance of what is prescribed; adherence in practice; observance. 

  • A regime under which a subject is routinely observed. 

  • Philosophically as: the phenomenal presence of human being existence. 

  • The act of observing, and the fact of being observed (see observance) 

post mortem

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

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

adv
  • Occurring after death. 

adj
  • Having been inflicted or having occurred after death. 

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