bhikkhu vs sannyasi

bhikkhu

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

sannyasi

noun
  • A man in the stage of sannyasa; a wandering ascetic, a religious mendicant. 

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