amenable vs refractory

amenable

adj
  • Liable to be brought to account, to a charge or claim; responsible; accountable; answerable. 

  • Willing to respond to persuasion or suggestions. 

  • Being a locally compact topological group carrying a kind of averaging operation on bounded functions that is invariant under translation by group elements. 

  • Willing to comply; easily led. 

  • Liable to the legal authority of (something). 

refractory

noun
  • A material or piece of material, such as a brick, that has a very high melting point. 

adj
  • Obstinate and unruly; strongly opposed to something. 

  • Not affected by great heat. 

  • Difficult to treat. 

  • Incapable of registering a reaction or stimulus. 

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