discussion vs treatment

discussion

noun
  • Text giving further detail on a subject. 

  • Conversation or debate concerning a particular topic. 

treatment

noun
  • A treatise; a formal written description or characterization of a subject. 

  • Medical care for an illness or injury. 

  • A brief, third-person, present-tense summary of a proposed film. 

  • The use of a substance or process to preserve or give particular properties to something. 

  • The process or manner of treating someone or something. 

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