bhikkhu vs postulant

bhikkhu

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

postulant

noun
  • A person seeking admission to a religious order. 

  • A person who submits a petition for something; a petitioner. 

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