inclination vs tendency

inclination

noun
  • A tendency. 

  • The angle of intersection of a reference plane 

  • A physical tilt or bend. 

  • A slant or slope. 

tendency

noun
  • A likelihood of behaving in a particular way or going in a particular direction; a tending toward. 

  • An organised unit or faction within a larger political organisation. 

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