Bill vs Kit

Bill

name
  • A diminutive of the male given name William. 

  • A nickname for the British constabulary. Often called "The Bill" or "Old Bill" 

  • A surname. 

Kit

name
  • A diminutive of the male given name Christopher. 

  • A transliteration of the Ukrainian surname Кіт (Kit). 

  • A diminutive of the female given name Katherine and related female given names. 

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