g vs y

g

noun
  • A unit of gravitational acceleration. 

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

y

character
  • The twenty-fifth letter of the English alphabet, called wy or wye and written in the Latin script. 

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