N vs unergative

N

noun
  • noun 

  • north (see also n) 

  • navy 

  • knight 

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

unergative

noun
  • An unergative verb. 

adj
  • Intransitive and having an agent as its subject. 

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