Polish vs Polishness

Polish

noun
  • The language spoken in Poland. 

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

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

Polishness

noun
  • The quality or state of being Polish. 

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