mackintosh vs oilskin

mackintosh

noun
  • A waterproof long coat made of rubberized cloth. 

  • Waterproof rubberized cloth. 

  • Any waterproof coat or raincoat. 

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. 

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