ameliorative vs healful

ameliorative

adj
  • Suggesting or relating to a positive or approving evaluation. 

  • 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. 

  • Able to repair or ameliorate. 

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

  • That which betters or improves. 

healful

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

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

  • Affording health or salvation. 

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