damsel vs prioress

damsel

noun
  • A young woman (of noble birth). 

  • A girl; a maiden (without sexual experience). 

  • A young woman who is not married. 

  • A chattering damsel (component of a mill). 

  • An unmarried lady-in-waiting. 

prioress

noun
  • A nun in charge of a priory (usually lower in rank than an abbess); mother superior. 

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