depravity vs mercifulness

depravity

noun
  • Inborn corruption, entailing the belief that every facet of human nature has been polluted, defiled, and contaminated by sin. 

  • The state or condition of being depraved; moral debasement. 

  • A particular depraved act or trait. 

mercifulness

noun
  • The state of being merciful; mercy. 

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