Black Monk vs Cistercian

Black Monk

noun
  • A Benedictine monk, one of the Order of Saint Benedict. 

Cistercian

noun
  • A member of a monastic order which follows the Benedictine rule and emphasizes silent contemplative prayer. 

adj
  • Of, pertaining to or characteristic of the Cistercian Order and its members. 

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