alterative vs iatric

alterative

adj
  • Causing alteration. 

  • Gradually changing, or tending to change, a morbid state into a healthy one. 

noun
  • A medicine or treatment which works by changing processes within the body, rather than by evacuating something etc. 

iatric

adj
  • Of or pertaining to a physician or physicians. 

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