Black Monk vs Carthusian

Black Monk

noun

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

Carthusian

noun

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

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

adj

  • Of, or relating to this order. 

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