epidemic vs sterilization

epidemic

adj
  • Like or having to do with an epidemic; widespread. 

noun
  • An occurrence of a disease or disorder in a population at a frequency higher than that expected in a given time period; an episode of outbreak and subsequent high prevalence. 

  • A widespread disease that affects many individuals in a population. 

  • The spreading of an idea or belief amongst a population. 

sterilization

noun
  • An instance of a sterilization procedure. 

  • A procedure to permanently prevent an organism from reproducing. 

  • A monetary policy operation used to offset a foreign exchange intervention. 

  • The process of treating something to kill or inactivate microorganisms. 

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