ameliorative vs medicinal

ameliorative

adj
  • Able to repair or ameliorate. 

  • Of or relating to conceptual engineering, the normative study of which conceptual demarcation is most conducive to solve the problems the concept is a priori taken to solve. 

  • Suggesting or relating to a positive or approving evaluation. 

noun
  • A linguistic unit (such as a word, morpheme) that implies a positive or approving evaluation. 

  • That which betters or improves. 

medicinal

adj
  • Tending or used to cure disease or relieve pain. 

  • Having the properties of medicine, or pertaining to medicine; medical. 

  • Tasting like medicine; particularly of unpleasant or artificial sweet or bitter flavours similar to cherry, almond or licorice. 

noun
  • Any plant that can be used for medicinal purposes. 

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