desk pad vs washer

desk pad

noun
  • Synonym of blotter (“blotting paper in a pad as a piece of desk furniture”) 

washer

noun
  • Something that washes; especially an appliance such as a washing machine or dishwasher. 

  • A person who washes his or her hands compulsively, as a symptom of obsessive-compulsive disorder. 

  • A person who washes (especially clothes) for a living; a washerman or washerwoman. 

  • A face cloth. 

  • A flat disk, placed beneath a nut or at some joint, to distribute pressure, alleviate friction or prevent leakage. 

verb
  • To fit (a mechanical device) with a washer. 

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