animus vs rancor

animus

noun
  • A feeling of enmity, animosity or ill will. 

  • The masculine aspect of the feminine psyche or personality. 

  • The basic impulses and instincts which govern one's actions. 

rancor

noun
  • A feeling of long-lasting ire for another, sometimes to the point of hatred, over a perceived wrongdoing; bitterness. 

  • Rancidity, rankness. 

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