healful vs salubrious

healful

adj
  • Full of health or safety; healthy; whole; sound; safe. 

  • Tending or serving to heal; health-promoting; healing. 

  • Affording health or salvation. 

salubrious

adj
  • Promoting health or well-being; wholesome, especially relating to food or air. 

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