prevention vs synergy

prevention

noun
  • precaution; forethought. 

  • Any measure intended to limit health-related risks (such as information campaigns, vaccination, early diagnosis etc.). 

  • The act of preventing or hindering; obstruction of action, access, or approach; thwarting. 

synergy

noun
  • Benefits resulting from combining different groups, people, objects or processes. 

  • The cooperation of two or more nerves, muscles, organs, etc. 

  • A synonym of binding energy. 

  • The combined action of two or more drugs where the effects are stronger than their mere sum. 

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