asperse vs vilify

asperse

verb
  • To falsely or maliciously charge another; to slander. 

  • To sprinkle or scatter (liquid or dust). 

vilify

verb
  • To say defamatory things about someone or something; to speak ill of. 

  • To belittle through speech; to put down. 

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