labour vs mull

labour

verb
  • To toil, to work. 

  • To suffer the pangs of childbirth. 

  • To pitch or roll heavily, as a ship in a turbulent sea. 

  • To belabour, to emphasise or expand upon (a point in a debate, etc). 

  • To be oppressed with difficulties or disease; to do one's work under conditions which make it especially hard or wearisome; to move slowly, as against opposition, or under a burden. 

noun
  • Workers in general; the working class, the workforce; sometimes specifically the labour movement, organised labour. 

  • That which requires hard work for its accomplishment; that which demands effort. 

  • The act of a mother giving birth. 

  • Effort expended on a particular task; toil, work. 

  • A traditional unit of area in Mexico and Texas, equivalent to 177.1 acres or 71.67 ha. 

  • A group of moles. 

  • The pitching or tossing of a vessel which results in the straining of timbers and rigging. 

  • A political party or force aiming or claiming to represent the interests of labour. 

  • The time period during which a mother gives birth. 

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. 

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