cross-questioning vs debriefing

cross-questioning

noun
  • cross-examination 

debriefing

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

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

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