dishwasher vs washing-up liquid

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). 

washing-up liquid

noun
  • A form of liquid soap used to wash dishes by hand. 

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