glimpse vs nark

glimpse

verb
  • To see or view briefly or incompletely. 

  • To appear by glimpses. 

noun
  • A brief look, glance, or peek. 

  • A sudden flash. 

  • A faint idea; an inkling. 

nark

verb
  • To watch; to observe. 

  • To stop. 

  • To annoy or irritate. 

  • To serve or behave as a spy or informer. 

  • To complain. 

noun
  • An unpleasant person, especially one who makes things difficult for others. 

  • A police spy or informer. 

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