ameliorative vs curative

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. 

curative

adj
  • Remediative. 

  • Possessing the ability to cure, to heal or treat illness. 

  • of a verb, conveying the meaning "the agent makes a patient do something" 

noun
  • A substance that acts as a cure. 

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