c vs t

c

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

noun
  • The middle tone in either one of the sets of seven white keys on a keyboard or a set of seven strings on a stringed instrument. 

t

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

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