chook vs ski cap

chook

noun
  • A cooked chicken; a chicken dressed for cooking. 

  • A chicken, especially a hen. 

intj
  • A call made to chickens. 

  • An imitation of the call of a chicken. 

ski cap

noun
  • Synonym of beanie (“type of hat”) 

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