Cat vs Patty

Cat

name
  • A diminutive of the female given names Catherine or Caitlin. 

noun
  • A Catalina flying boat. 

  • A piece of heavy machinery, such as a backhoe, of the Caterpillar brand. 

Patty

name
  • A female given name, a diminutive of the female given name Patricia. 

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