casting vs molding

casting

noun
  • A manufacturing process using a mold. 

  • The act or process of selecting actors, singers, dancers, models, etc. 

  • Of hounds, the act of spreading out and searching for a scent. 

  • An object made in a mold. 

  • The regurgitation of fur, feathers, and other undigestible material by hawks, to clean and empty their crops.^([W]) 

  • The excreta of an earthworm or similar creature. 

  • The act of converting between data types. 

molding

noun
  • A planing machine for making moldings. 

  • Anything cast in a mold, or which appears to be so, as grooved or ornamental bars of wood or metal. 

  • A machine to assist in making molds for castings. 

  • The act or process of shaping in or on a mold, or of making molds; the art or occupation of a molder. 

  • A plane, or curved, narrow surface, either sunk or projecting, used for decoration by means of the lights and shades upon its surface and to conceal joints, especially between unlike materials. 

  • A mill for shaping timber. 

  • A kind of sand containing clay, used in making molds. 

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