disposal vs hydro

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. 

hydro

noun
  • electrical power supply; specifically, electrical power provided by a utility (as a publicly-owned one); payment or bills for this. 

  • hydroelectric power 

adj
  • hydroelectric 

  • hydroponic 

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