amazon vs virago

amazon

noun
  • A fairy chess piece which combines the moves of the queen and the knight. 

  • A tall, strong, athletic woman. 

  • An amazon parrot 

virago

noun
  • A woman given to undue belligerence or ill manner at the slightest provocation. 

  • A woman who is rough, loud, and aggressive. 

  • A woman who is scolding, domineering, or highly opinionated. 

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