anchoress vs sannyasi

anchoress

noun
  • A female anchorite. A woman who chooses to withdraw from the world to live a solitary life of prayer and contemplation. 

  • An anchorwoman. 

sannyasi

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

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