acquiescent vs obstinate

acquiescent

adj
  • willing to acquiesce, accept or agree to something without objection, protest or resistance 

  • resting satisfied or submissive; disposed tacitly to submit 

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. 

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