casting vs pitching

casting

noun
  • 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. 

  • A manufacturing process using a mold. 

  • The act of converting between data types. 

pitching

noun
  • The act of throwing or casting. 

  • The rough paving of a street to a grade with blocks of stone. 

  • A facing of stone laid upon a bank to prevent wear by tides or currents. 

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