dissimilitude vs inequality

dissimilitude

noun
  • The quality of being diverse or different; lack of resemblance. 

inequality

noun
  • A statement that of two quantities one is specifically less than (or greater than) another. Symbol: < or ≤ or > or ≥ or ne , as appropriate. 

  • The inequality in living standards led to a civil war as the have nots rebelled. 

  • An unfair, not equal, state. 

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