Polish vs fink

Polish

noun
  • A breed of chickens with a large crest of feathers. 

  • The language spoken in Poland. 

adj
  • Of, from or native to Poland, or relating to the Polish language. 

fink

noun
  • An informer. 

  • A strikebreaker. 

  • A contemptible person. 

  • Any of several birds in the family Ploceidae native to southern Africa. 

verb
  • To betray a trust; to inform on. 

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