ameliorative vs priceless

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. 

priceless

adj
  • So precious as not to be sold at any price; invaluable. 

  • Treasured; held in high regard. 

  • Without a price assigned. 

  • Very amusing, hilarious. 

  • Ridiculous, absurd, rich. 

  • Excellent, wonderful, fantastic. 

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