chantry vs monstrance

chantry

noun
  • A chapel set up for this purpose 

  • An endowment for the maintenance of a priest to sing a daily mass for the souls of specified people 

monstrance

noun
  • An ornamental, often precious receptacle, either open or with a transparent cover, in which the sacramental bread (consecrated host) is placed for Eucharistic adoration. 

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