beaker vs milker

beaker

noun
  • A mug. 

  • A drinking vessel without a handle, sometimes for the use of children. 

  • A flat-bottomed vessel, with a lip, used as a laboratory container. 

  • A scientist. 

milker

noun
  • A person who milks. 

  • A woman’s breast. 

  • A milking machine. 

  • 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 beaker and milker occurred in a corpus of books? (source: Google Ngram Viewer )