epitaph vs obit

epitaph

noun
  • An inscription on a gravestone in memory of the deceased. 

  • A poem or other short text written in memory of a deceased person. 

verb
  • To write or speak after the manner of an epitaph. 

  • To commemorate by an epitaph. 

obit

noun
  • An obituary. 

  • A mass or other service held for the soul of a dead person. 

  • A record of a person's death. 

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