enema vs injection

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. 

injection

noun
  • A specimen prepared by injection. 

  • The act of injecting, or something that is injected. 

  • A function that maps distinct x in the domain to distinct y in the codomain; formally, a f: X → Y such that f(a) = f(b) implies a = b for any a, b in the domain. 

  • Congestion (of a body part, with blood or other fluid), such as hyperemia. 

  • The supply of additional funding to a person or a business. 

  • A morphism from either one of the two components of a coproduct to that coproduct. 

  • Fuel injection: the pressurized introduction of fuel into a cylinder. 

  • The act of inserting materials like concrete grout or gravel by using high pressure pumps. 

  • The cold water thrown into a condenser to produce a vacuum. 

  • The act of putting a spacecraft into a particular orbit, especially for changing a stable orbit into a transfer orbit, e.g. trans-lunar injection. 

  • A relation on sets (X,Y) that associates each element of Y with at most one element of X. 

  • Something injected subcutaneously, intravenously, or intramuscularly by use of a syringe and a needle. 

  • The act of throwing cold water into a condenser to produce a vacuum. 

  • The insertion of program code into an application, URL, hardware, etc.; especially when malicious or when the target is not designed for such insertion. 

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