oilcloth vs washrag

oilcloth

noun
  • A fabric or cloth treated on one side with a waterproof covering, especially one made from linseed oil etc.; used for flooring, tablecloths, kitchen shelves and sometimes furniture covering. 

washrag

noun
  • A square piece of cloth for washing the face and body. 

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