catty vs viperish

catty

adj
  • With subtle hostility in an effort to hurt, annoy, or upset, particularly among women. 

  • Resembling or characteristic of a cat. 

noun
  • A (unit of) weight used in China, generally standardized as half a kilogram. 

  • A catapult. 

viperish

adj
  • spiteful; treacherous 

  • In the manner of a viper. 

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