enema vs injector

enema

noun
  • A device for administering such an injection. 

  • An injection of fluid into the large intestine by way of the rectum, usually for medical purposes. 

  • The fluid so injected. 

injector

noun
  • Any of various devices that are used to inject something. 

  • An object that realizes a dependency injection. 

  • An apparatus by which a stream of water is forced into a steam boiler. 

  • One who injects (himself or herself with) psychoactive drugs. 

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