bob vs mull

bob

verb
  • To curtsy. 

  • To bobsleigh. 

  • To strike with a quick, light blow; to tap. 

  • To move (something) as though it were bobbing in water. 

  • To move gently and vertically, in either a single motion or repeatedly up and down, at or near the surface of a body of water, or similar medium. 

  • To cut (hair) into a bob haircut. 

  • To shorten by cutting; to dock; to crop. 

noun
  • A small wheel, made of leather, with rounded edges, used in polishing spoons, etc. 

  • A working beam in a steam engine. 

  • An unspecified amount of money. 

  • The docked tail of a horse. 

  • A graphical element, resembling a hardware sprite, that can be blitted around the screen in large numbers. 

  • A particular style of ringing changes on bells. 

  • A bobsleigh. 

  • A blow; a shake or jog; a rap, as with the fist. 

  • Any of various hesperiid butterflies. 

  • A bobbing motion; a quick up and down movement. 

  • A curtsy. 

  • A bob haircut. 

  • Any round object attached loosely to a flexible line, a rod, a body part etc., so that it may swing when hanging from it. 

  • The dangling mass of a pendulum or plumb line. 

  • A short line ending a stanza of a poem. 

  • A bobber (buoyant fishing device). 

  • The short runner of a sled. 

mull

verb
  • To dull or stupefy. 

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

  • 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. 

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 bob and mull occurred in a corpus of books? (source: Google Ngram Viewer )