noxious vs salutary

noxious

adj
  • Harmful; injurious. 

salutary

adj
  • Effecting or designed to effect an improvement; remedial: salutary advice. 

  • Promoting good health and physical well-being; wholesome; curative. 

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