boo vs mull

boo

noun
  • Cannabis. 

  • A derisive shout made to indicate disapproval. 

  • A close acquaintance or significant other. 

  • A tail feather from an ostrich. 

verb
  • To shout extended boos derisively. 

  • To shout extended boos at, as a form of derision. 

  • To defecate. 

intj
  • Used ironically in a situation where one had the opportunity to scare someone by speaking suddenly. 

  • A loud exclamation intended to scare someone, especially a child. Usually used when one has been hidden from the victim and then suddenly appeared unexpectedly. 

  • An exclamation used by a member or many members of an audience, as at a stage play or sports game, to indicate derision or disapproval of what has just occurred. 

mull

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

  • 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. 

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

  • To dull or stupefy. 

  • To powder; to pulverize. 

  • 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. 

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