activity vs racket

activity

noun
  • Something done as an action or a movement. 

  • The lexical aspect (aktionsart) of verbs or predicates that change over time and have no natural end point. 

  • Something done for pleasure or entertainment, especially one involving movement or an excursion. 

  • The state or quality of being active; activeness. 

  • The number of radioactive decays per unit time. Unit for it: becquerel or curie 

  • The propery of substances to react with other substances 

racket

noun
  • An illegal scheme for profit; a fraud or swindle; or both coinstantiated. 

  • An implement with a handle connected to a round frame strung with wire, sinew, or plastic cords, and used to hit a ball, such as in tennis or a birdie in badminton. 

  • A broad wooden shoe or patten for a man or horse, to allow walking on marshy or soft ground. 

  • A loud noise. 

  • A snowshoe formed of cords stretched across a long and narrow frame of light wood. 

verb
  • To strike with, or as if with, a racket. 

  • To make a clattering noise. 

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