depravation vs putrefaction

depravation

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

  • Detraction; depreciation. 

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

  • Change for the worse; deterioration; morbid perversion. 

putrefaction

noun
  • The state of being rotten. 

  • The act of causing to rot; the anaerobic splitting of proteins by bacteria and fungi with the formation of malodorous, incompletely oxidized products. 

  • Rotten material. 

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