disinterest vs tendency

disinterest

noun
  • The absence of interest (bias or stake). 

  • An absence of interest (attention or curiosity). 

verb
  • To render disinterested. 

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 disinterest and tendency occurred in a corpus of books? (source: Google Ngram Viewer )