inclination vs usance

inclination

noun
  • A tendency. 

  • The angle of intersection of a reference plane 

  • A physical tilt or bend. 

  • A slant or slope. 

usance

noun
  • Customary or habitual usage. 

  • Use. 

  • The interest paid on a borrowed sum, usury. 

  • The length of time permitted for the payment of a bill of exchange. 

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