cast aspersions vs dispraise

cast aspersions

verb
  • To make damaging or spiteful remarks. 

dispraise

verb
  • To notice with disapprobation or some degree of censure; to disparage, to criticize. 

noun
  • Blame; reproach; disapproval; criticism. 

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