bhikkhu vs clergyperson

bhikkhu

noun
  • A male Buddhist monk or priest; one who follows all Buddhist precepts as a full member of the sangha. 

clergyperson

noun
  • An ordained (male or female) Christian minister, a member of the clergy. 

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