K vs w

K

character
  • The eleventh letter of the English alphabet, called kay and written in the Latin script. 

intj
  • Synonym: 'kay 

  • OK 

w

character
  • The twenty-third letter of the English alphabet, called double-u and written in the Latin script. 

noun
  • watt 

  • witness 

  • west 

  • work 

prep
  • with a wing (on the Enneagram) 

adj
  • white 

  • wide 

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