mull vs potpourri

mull

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

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

  • 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. 

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. 

potpourri

noun
  • A ragout or stew of meat and vegetables. 

  • An anthology of miscellaneous prose. 

  • A mixture of dried fragrant plant material, often in a decorative bowl, used to scent a room. 

  • A collection of various things; an assortment, mixed bag or motley. 

  • A medley of songs or music. 

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