obit vs obsequy

obit

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

  • An obituary. 

  • A record of a person's death. 

obsequy

noun
  • A funeral rite or service. 

  • The last office for the dead. 

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