monogamous vs vestal

monogamous

adj
  • Monogamic; having a simple flower with united anthers. 

  • Being married to one person at a time. 

  • Having only one sexual partner at a time. 

vestal

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

  • Pure; chaste. 

noun
  • 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. 

  • A nun. 

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