disposal vs power supply

disposal

noun
  • The power to use something or someone. 

  • A disposing of or getting rid of something. 

  • A kick or a handball of the ball during a game. 

  • An arrangement, categorization or classification of things. 

power supply

noun
  • Used other than figuratively or idiomatically: see power, supply. 

  • A source of power such as the mains or a generator. 

  • That part of a piece of electronic apparatus that provides appropriate voltages for the rest of the electronics from the connected AC source. 

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