dishwasher vs scullery maid

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). 

scullery maid

noun
  • A domestic servant, of lowest status, whose job is to wash dishes and do other menial chores. 

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