appliance vs dynamo

appliance

noun
  • A non-manual apparatus or device, powered electrically or by another small motor, used in homes to perform domestic functions (household appliance) and/or in offices. 

  • An attachment, a piece of equipment to adapt another tool or machine to a specific purpose. 

  • An implement, an instrument or apparatus designed (or at least used) as a means to a specific end, especially 

dynamo

noun
  • An electricity generator; a dynamo-electric machine. 

  • The mechanism by which a celestial body, such as the Earth or a star, generates a magnetic field. 

  • An energetic person. 

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