belt vs commutator

belt

noun
  • A band that is used in a machine to help transfer motion or power. 

  • A powerful blow, often made with a fist or heavy object. 

  • A band worn around the waist to hold clothing to one's body (usually pants), hold weapons (such as a gun or sword), or serve as a decorative piece of clothing. 

  • One of certain girdles or zones on the surface of the planets Jupiter and Saturn, supposed to be of the nature of clouds. 

  • The part of the strike zone at the height of the batter's waist. 

  • A band used as a restraint for safety purposes, such as a seat belt. 

  • A device that holds and feeds cartridges into a belt-fed weapon. 

  • A quick drink of liquor. 

  • A trophy in the shape of a belt, generally awarded for martial arts. 

  • Anything that resembles a belt, or that encircles or crosses like a belt; a strip or stripe. 

  • A collection of small bodies (such as asteroids) which orbit a star. 

  • A geographical region known for a particular product, feature or demographic (Corn Belt, Bible Belt, Black Belt, Green Belt). 

  • A vocal tone produced by singing with chest voice above the break (or passaggio), in a range typically sung in head voice. 

  • A band of armor along the sides of a warship, protecting the ship's vital spaces. 

verb
  • To fasten a belt on. 

  • To invest (a person) with a belt as part of a formal ceremony such as knighthood. 

  • To hit with a belt. 

  • To scream or sing in a loud manner. 

  • To move very fast. 

  • To encircle. 

  • To hit a pitched ball a long distance, usually for a home run. 

  • To hit someone or something. 

  • To drink quickly, often in gulps. 

commutator

noun
  • An electrical switch, in a generator or motor, that periodically reverses the direction of an electric current. 

  • A binary map in a given group G, given by [g, h] = ghg⁻¹h⁻¹, where g and h are elements of G, which yields the group's identity if and only if the group operation commutes for g and h. 

  • A binary map in a given ring R, given by [a, b] = ab − ba, where a and b are elements of R, which yields the ring's zero element if and only if the multiplication operation commutes for a and b. 

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