g vs i

g

character

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

noun

  • A unit of gravitational acceleration. 

i

character

  • The ninth letter of the English alphabet, called i and written in the Latin script. 

noun

  • The name of the Latin-script letter I/i. 

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