contamination vs depravation

contamination

noun
  • The act or process of contaminating 

  • A process whereby words with related meanings come to have similar sounds. 

  • The influence of one form (often from a foreign language) on the historical development of another form to which it may be related in meaning. 

  • Something which contaminates. 

  • The process of making a material or surface unclean or unsuited for its intended purpose, usually by the addition or attachment of undesirable foreign substances. 

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. 

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