mull vs study

mull

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

  • 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 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. 

study

verb
  • To endeavor diligently; to be zealous. 

  • To acquire knowledge on a subject with the intention of applying it in practice. 

  • To look at minutely. 

  • To review materials already learned in order to make sure one does not forget them, usually in preparation for an examination. 

  • To take a course or courses on a subject. 

  • To fix the mind closely upon a subject; to dwell upon anything in thought; to muse; to ponder. 

noun
  • A room in a house intended for reading and writing; traditionally the private room of the male head of household. 

  • The human face, bearing an expression which the observer finds amusingly typical of a particular emotion or state of mind. 

  • Mental effort to acquire knowledge or learning. 

  • Any particular branch of learning that is studied; any object of attentive consideration. 

  • An endgame problem composed for artistic merit, where one side is to play for a win or for a draw. 

  • An artwork made in order to practise or demonstrate a subject or technique. 

  • An academic publication. 

  • A piece for special practice; an étude. 

  • The act of studying or examining; examination. 

  • One who commits a theatrical part to memory. 

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