discourse vs hip-hop

discourse

verb
  • To engage in discussion or conversation; to converse. 

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

  • To write or speak formally and at length. 

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. 

hip-hop

verb
  • To move by hopping or with a hopping motion. 

  • To perform hip-hop music. 

noun
  • An Afro-American urban youth culture based on rap music, breakdancing etc. 

  • A form of popular and dance music featuring strong percussion and a powerful rhythm, usually accompanied by rapping. 

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