inequity vs tolerance

inequity

noun
  • A lack of equity (justice). 

  • An unjust act; a disservice. 

tolerance

noun
  • The ability or practice of tolerating; an acceptance of or patience with the beliefs, opinions or practices of others; a lack of bigotry. 

  • The ability of the body to accept a tissue graft without rejection. 

  • The variation or deviation from a standard, especially the maximum permitted variation in an engineering measurement. 

  • The ability of the body (or other organism) to resist the action of a poison, to cope with a dangerous drug or to survive infection by an organism. 

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