Briton vs pommie

Briton

noun
  • A citizen of the United Kingdom or (historical, obsolete) its overseas empire. 

  • An inhabitant of Great Britain, particularly (historical) a Celt from the area of Roman Britain or (obsolete) a Welshman. 

pommie

noun
  • An English immigrant; a pom. 

adj
  • English; British. 

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