K vs o

K

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

intj
  • Synonym: 'kay 

  • OK 

o

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

adj
  • Over 

noun
  • A zero (used in reading out numbers). 

  • Operator 

  • The name of the Latin-script letter O/o. 

  • Object, see SVO 

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