demean vs denigrate

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. 

denigrate

verb
  • To treat as worthless; belittle, degrade or disparage. 

  • To blacken. 

  • To criticise so as to besmirch; traduce, disparage or defame. 

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