dry cleaner vs washing-up liquid

dry cleaner

noun
  • A person whose business is the dry cleaning of clothes and other fabrics. 

  • A business establishment that engages in the dry cleaning of clothes and other fabrics. 

washing-up liquid

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

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