oilskin vs windbreaker

oilskin

noun
  • A raincoat made from cotton fabric treated with oil and pigment to make it waterproof. 

  • Cloth made from cotton and treated with oil and pigment to make it waterproof. 

  • Foul-weather gear worn by sailors, whether of natural or synthetic materials. 

windbreaker

noun
  • A thin outer coat designed to resist wind chill and light rain. 

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