depravity vs immorality

depravity

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

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

  • A particular depraved act or trait. 

immorality

noun
  • The state or quality of being immoral; vice. 

  • An immoral act or practice. 

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