Lady vs vestal

Lady

noun
  • A high priestess. 

  • An aristocratic title for a woman; the wife of a lord and/or a woman who holds the position in her own right; a title for a peeress, the wife of a peer or knight, and the daughters and daughters-in-law of certain peers. 

name
  • The title for the (primary) female deity in female-centered religions. 

  • The major supernatural figurehead in the Wiccan religion, a triune goddess split into the Mother, Maiden, and Crone. 

vestal

noun
  • A nun. 

  • A female virgin; a woman who has never had sexual relations. 

  • A virgin consecrated to Vesta, and to the service of watching the sacred fire, which was to be perpetually kept burning upon her altar; a vestal virgin. 

adj
  • Of or pertaining to Vesta, the virgin goddess of the hearth. 

  • Pure; chaste. 

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