inequality vs sameness

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. 

sameness

noun
  • The quality of being the same; identity. 

  • A tiring lack of variety; monotony. 

  • The state of being equivalent; equality. 

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