i vs jay

i

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

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

jay

noun
  • The name of the Latin-script letter J. 

  • Any of the numerous species of birds belonging to several genera within the family Corvidae, including Garrulus, Cyanocitta, Aphelocoma, Perisoreus, Cyanocorax, Gymnorhinus, Cyanolyca, Ptilostomus, and Calocitta, allied to the crows, but smaller, more graceful in form, often handsomely coloured, usually having a crest, and often noisy. 

  • Any of various large papilionid butterflies of the genus Graphium. 

  • The Indian roller, Coracias benghalensis. 

  • A marijuana cigarette; a joint. 

  • Any of various other birds of similar appearance and behaviour. 

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