mull vs rectify

mull

verb
  • To heat and spice something, such as wine. 

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

  • To dull or stupefy. 

  • To powder; to pulverize. 

  • 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. 

rectify

verb
  • To produce (as factitious gin or brandy) by redistilling bad wines or strong spirits (whisky, rum, etc.) with flavourings. 

  • To adjust (a globe or sundial) to prepare for the solution of a proposed problem. 

  • To restore (someone or something) to its proper condition; to straighten out, to set right. 

  • To determine the length of a curve included between two limits. 

  • To purify or refine (a substance) by distillation. 

  • To remedy or fix (an undesirable state of affairs, situation etc.). 

  • To convert (alternating current) into direct current. 

  • To correct or amend (a mistake, defect etc.). 

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