mull vs spill

mull

verb
  • To powder; to pulverize. 

  • To chop marijuana so that it becomes a smokable form. 

  • To dull or stupefy. 

  • To heat and spice something, such as wine. 

  • To work (over) mentally; to cogitate; to ruminate. 

  • To join two or more individual windows at mullions. 

noun
  • An inferior kind of madder prepared from the smaller roots or the peelings and refuse of the larger. 

  • A stew of meat, broth, milk, butter, vegetables, and seasonings, thickened with soda crackers. 

  • dirt; rubbish 

  • A thin, soft muslin. 

  • A promontory. 

  • A snuffbox made of the small end of a horn. 

  • The gauze used in bookbinding to adhere a text block to a book's cover. 

  • Marijuana that has been chopped to prepare it for smoking. 

spill

verb
  • To drop something so that it spreads out or makes a mess; to accidentally pour. 

  • To mar; to damage; to destroy by misuse; to waste. 

  • To drop something that was intended to be caught. 

  • To open the leadership of a parliamentary party for re-election. 

  • To reveal information to an uninformed party. 

  • To cover or decorate with slender pieces of wood, metal, ivory, etc.; to inlay. 

  • To relieve a sail from the pressure of the wind, so that it can be more easily reefed or furled, or to lessen the strain. 

  • To come undone. 

  • To spread out or fall out, as above. 

  • To cause to flow out and be lost or wasted; to shed. 

noun
  • A fall or stumble. 

  • A metallic rod or pin. 

  • One of the thick laths or poles driven horizontally ahead of the main timbering in advancing a level in loose ground. 

  • A small stick or piece of paper used to light a candle, cigarette etc by the transfer of a flame from a fire. 

  • A peg or pin for plugging a hole, as in a cask; a spile. 

  • A declaration that the leadership of a parliamentary party is vacant, and open for re-election. Short form of leadership spill. 

  • A mess of something that has been dropped. 

  • The situation where sound is picked up by a microphone from a source other than that which is intended. 

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