ameliorative vs constructive

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. 

constructive

adj
  • Carefully considered and meant to be helpful. 

  • Relating to or causing construction. 

  • Not direct or expressed, but inferred. 

  • Imputed by law; created to give legal effect to something for equitable reasons, as with constructive notice or a constructive trust. 

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