Pole vs kook

Pole

noun
  • A person from Poland or of Polish descent. 

name
  • A surname. 

kook

noun
  • An eccentric, strange or crazy person. 

  • A boardsport participant who lacks style or skill; a newbie who acts as if they are better at the sport than they are. 

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