demean vs depreciate

demean

verb
  • To debase; to lower; to degrade. 

  • To subtract the mean from (a value, or every observation in a dataset). 

  • To mortify. 

  • To humble, humble oneself; to humiliate. 

noun
  • resources; means. 

  • demesne. 

depreciate

verb
  • To lessen in price or estimated value; to lower the worth of. 

  • To decline in value over time. 

  • To belittle or disparage. 

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