Brit vs pommy

Brit

noun

  • A British person. 

  • A Brit Award, a prize for musicians in Britain. 

pommy

noun

  • A pom; a person of British descent, a Briton; an Englishman. 

adj

  • English; British. 

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