mull vs solve

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. 

solve

verb
  • To loosen or separate the parts of. 

  • to find out the perpetrator, the motive etc (of crime) 

  • To algebraically manipulate an equation or inequality into a form that isolates a chosen variable on one side, so that the other side consists of an expression that may be used to generate solutions. 

  • To find an answer or solution to a problem or question; to work out. 

  • To find the values of variables that satisfy a system of equations and/or inequalities. 

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