g vs gram

g

noun
  • A unit of gravitational acceleration. 

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

gram

noun
  • A unit of mass equal to one-thousandth of a kilogram. Symbol: g. 

  • The seeds of these plants. 

  • A leguminous plant grown for its seeds, especially the chickpea. 

  • Grandmother. 

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