dishwasher vs washerwoman

dishwasher

noun
  • Someone who washes dishes, especially one hired to wash dishes in a restaurant. 

  • A European bird, the wagtail. 

  • A machine for washing dishes. 

  • A bird, the restless flycatcher (Myiagra inquieta). 

washerwoman

noun
  • A woman who washes people's laundry. 

  • Double drummer. 

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