girn vs nark

girn

verb
  • To whinge, moan, complain. 

  • To make elaborate unnatural and distorted faces as a form of amusement or in a girning competition. 

  • To grimace; to snarl. 

noun
  • A vocalization similar to a cat's purring. 

nark

verb
  • To complain. 

  • To stop. 

  • To annoy or irritate. 

  • To serve or behave as a spy or informer. 

  • To watch; to observe. 

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

  • A police spy or informer. 

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