magic bullet vs vulnerary

magic bullet

noun
  • A simple remedy for a difficult or complex problem, especially a cure for a disease. 

vulnerary

noun
  • A healing drug or other agent used in healing and treating wounds. 

adj
  • Useful or used for healing wounds; healing, curative. 

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