severance vs togetherness

severance

noun
  • A separation. 

  • The act of severing or the state of being severed. 

  • A severance payment. 

togetherness

noun
  • The state or quality of being together. 

  • The result or product of being together. 

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