degeneracy vs depravation

degeneracy

noun
  • The state of being degenerate (in all senses). 

  • The ability of one part of the brain to take over another's function without being overexerted. 

depravation

noun
  • The state of being depraved or degenerated; degeneracy; depravity. 

  • Detraction; depreciation. 

  • Change for the worse; deterioration; morbid perversion. 

  • The act of depraving, or making anything bad; the act of corrupting. 

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