obsequy vs sepulture

obsequy

noun
  • A funeral rite or service. 

  • The last office for the dead. 

sepulture

noun
  • The act of sepulchring, committing the remains of a deceased person to the grave or sepulchre. 

verb
  • To inter in a sepulture. 

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