funeral rite vs inhumation

funeral rite

noun
  • A custom or ceremony pertaining to the recently dead, such as a funeral, public burial, or the Greek custom of breaking clayen vessels on the grave or in front of the deceased's house. 

inhumation

noun
  • The act of burial. 

  • arenation 

  • The act of burying vessels in warm earth in order to expose their contents to a steady moderate heat; the state of being thus exposed. 

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