dishpan vs dishwasher

dishpan

noun
  • A large basin or pan with a flat bottom in which dishes are washed. 

dishwasher

noun
  • A machine for washing dishes. 

  • A European bird, the wagtail. 

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

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

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