equality vs simultaneousness

equality

noun
  • The fact of being equal, of having the same value. 

  • The equal treatment of people irrespective of social or cultural differences. 

  • The fact of being equal. 

simultaneousness

noun
  • The quality or state of being simultaneous; simultaneity. 

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