slowness vs velocity

slowness

noun
  • A unit, the reciprocal of velocity, that delineates the amount of time required for an object to travel a given distance. 

  • The quality or state of being slow. 

velocity

noun
  • A vector quantity that denotes the rate of change of position with respect to time, combining speed with a directional component. 

  • The number of times that an average unit of currency is spent during a specific period of time. 

  • Rapidity of motion. 

  • The rate of occurrence. 

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