diatribe vs speech

diatribe

noun
  • A prolonged discourse. 

  • A speech or writing which bitterly denounces something. 

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

speech

noun
  • A formal session of speaking, especially a long oral message given publicly by one person. 

  • The ability to speak; the faculty of uttering words or articulate sounds and vocalizations to communicate. 

  • Language used orally, rather than in writing. 

  • An utterance that is quoted; see direct speech, reported speech 

  • Public talk, news, gossip, rumour. 

  • The act of speaking, a certain style of it. 

  • A dialect, vernacular, or (dated) a language. 

verb
  • To make a speech; to harangue. 

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