obstinate vs pliable

obstinate

adj
  • Stubbornly adhering to an opinion, purpose, or course, usually with implied unreasonableness; persistent. 

  • Typical of an obstinate person; fixed and unmoving. 

  • Not easily subdued or removed. 

pliable

adj
  • Easily persuaded; yielding to influence. 

  • Soft, flexible, easily bent, formed, shaped, or molded. 

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