catechism vs debriefing

catechism

noun
  • A set of questions designed to determine knowledge. 

  • A basic manual in some subject. 

  • A book, in question and answer form, summarizing the basic principles of Christianity. 

debriefing

noun
  • The report of a mission or project, or the information so obtained. 

  • The act of debriefing, or the state of being debriefed. 

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