Commandant vs narc

Commandant

noun
  • Title for the officer in charge of a commando or district. 

narc

noun
  • A police officer assigned to or engaging in illegal narcotics control. 

  • A narcissist. 

verb
  • To suffer from impaired judgment due to nitrogen narcosis (for example, while scuba diving). 

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