discourse vs lines

discourse

noun
  • Expression in words, either speech or writing. 

  • A formal lengthy exposition of some subject, either spoken or written. 

  • An institutionalized way of thinking, a social boundary defining what can be said about a specific topic (after Michel Foucault). 

  • Any rational expression, reason. 

verb
  • To exercise reason; to employ the mind in judging and inferring; to reason. 

  • To engage in discussion or conversation; to converse. 

  • To write or speak formally and at length. 

lines

noun
  • Words spoken by the actors. 

  • The reins with which a horse is guided by its driver. 

  • A school punishment in which a student must repeatedly write out a line of text related to the offence (e.g. "I must be quiet in class") a specified number of times; the lines of text so written out. 

  • Dispositions made to cover extended positions, and presenting a front in but one direction to an enemy. 

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