playbook vs reading

playbook

noun
  • A book containing the text of a play or plays. 

  • A set of commonly employed tactics and strategies. 

  • A book of games and amusements for children. 

  • A book of strategies (plays) for use in American football (and by extension other sports or disciplines). 

reading

noun
  • Something to read; reading material. 

  • The process of interpreting a symbol, a sign or a measuring device. 

  • A value indicated by a measuring device. 

  • One of several stages a bill passes through before becoming law. 

  • The act or process of imagining sequences of potential moves and responses without actually placing stones. 

  • The process of interpreting written language. 

  • An event at which written material is read aloud. 

  • An interpretation. 

  • The content of a reading list. 

  • A piece of literature or passage of scripture read aloud to an audience. 

  • The extent of what one has read. 

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