ageism vs tolerance

ageism

noun
  • The treating of a person or people, especially youth or seniors, differently from others based on assumptions, prejudices or/and stereotypes relating to their age. 

  • Bias against older adults (typically those in their sixties or older, but other times even younger if not even before middle-age). 

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 ageism and tolerance occurred in a corpus of books? (source: Google Ngram Viewer )