cobra vs ogress

cobra

noun
  • A type of lanyard knot, thought to resemble a snake in its shape. 

  • Any of various venomous snakes of the family Elapidae. 

ogress

noun
  • A roundel sable. 

  • A fierce, unfriendly woman. 

  • A female ogre. 

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