diatribe vs reproof

diatribe

noun
  • An abusive, bitter, verbal attack or criticism: denunciation. 

  • A speech or writing which bitterly denounces something. 

  • A prolonged discourse. 

reproof

noun
  • An act or instance of reproving or of reprobating; a rebuke, a reproach, an admonition. 

verb
  • To proof again. 

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