forbearance vs mercifulness

forbearance

noun
  • A refraining from the enforcement of something (as a debt, right, or obligation) that is due. 

  • Patient self-control; restraint and tolerance under provocation. 

mercifulness

noun
  • The state of being merciful; mercy. 

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