detention vs period of waiting

detention

noun
  • The bare physical control without the mental element of intention required for possession. 

  • The act of detaining or the state of being detained. 

  • Confinement of a prisoner awaiting trial. 

  • A punishment given to a student for a minor infraction, typically requiring the student to report to a designated room during recess or outside of school hours to work on homework or perform busywork. 

period of waiting

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