larnax vs martyry

larnax

noun
  • A small closed coffin, box or cinerary urn often used as a container for human remains in Ancient Greece. 

martyry

noun
  • A shrine in honor of a (usually religious, notably Christian) martyr, possibly at his grave. 

  • A shrine at a site which "bears witness" to a crucial religious event not related to a tomb. 

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