butter dish vs milker

butter dish

noun
  • A specialised dish for serving butter. It typically has a base with a separate fitting lid with its own handle. 

milker

noun
  • A milking machine. 

  • A woman’s breast. 

  • A person who milks. 

  • An animal, such as a dairy cow, kept for the milk it produces. 

  • A conservative poker player who only raises the stakes on a good hand. 

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