pliable vs yielding

pliable

adj
  • Easily persuaded; yielding to influence. 

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

yielding

adj
  • Docile, or inclined to give way to pressure. 

noun
  • A concession. 

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