N vs p

N

character

  • The fourteenth letter of the English alphabet, called en and written in the Latin script. 

noun

  • north (see also n) 

  • navy 

  • knight 

  • noun 

p

character

  • The sixteenth letter of the English alphabet, called pee and written in the Latin script. 

noun

  • proton 

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