feeling vs obdurate

feeling

adj
  • Emotionally sensitive. 

  • Expressive of great sensibility; attended by, or evincing, sensibility. 

noun
  • An opinion, an attitude. 

  • Emotional state or well-being. 

  • Emotion; impression. 

  • Sensation, particularly through the skin. 

  • Emotional attraction or desire. 

  • Intuition. 

obdurate

adj
  • Hardened against feeling; hard-hearted. 

  • Stubbornly persistent, generally in wrongdoing; refusing to reform or repent. 

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