Carthusian vs oblate

Carthusian

noun
  • A pupil of Charterhouse School (founded in a Carthusian monastery) 

  • A member of a Christian contemplative order of monks founded by Bruno of Cologne (St Bruno) in 1084. 

adj
  • Of, or relating to this order. 

oblate

noun
  • A child given up by its parents into the keeping or dedication of a religious order or house. 

  • A person dedicated to a life of religion or monasticism, especially a member of an order without religious vows or a lay member of a religious community. 

adj
  • Flattened or depressed at the poles. 

verb
  • To offer as either a gift or an oblation. 

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