paper towel vs washer-dryer

paper towel

noun
  • A sheet of absorbent paper dispensed in restrooms, usually used for drying washed hands. 

  • A sheet of absorbent paper, used for cleaning and food preparation, usually sold in and dispensed from rolls. 

washer-dryer

noun
  • A machine that combines a washing machine and clothes dryer. 

How often have the words paper towel and washer-dryer occurred in a corpus of books? (source: Google Ngram Viewer )