prevention vs synergist

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. 

synergist

noun
  • A chemical compound that increases the chemical activity of another compound when used with it. 

  • One who holds the religious doctrine of synergism. 

  • Any synergistic agent. 

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