checkout vs scrutiny

checkout

noun
  • An inspection or investigation. 

  • The process of checking out items at a supermarket or library. 

  • A test to see if some device is functioning properly. 

  • The process of confirming and paying for an online purchase. 

  • The process of checking out of a hotel, or the latest time to vacate a room in one. 

  • The place in a supermarket where this is done. 

  • The number of points that a player scores on their final, winning visit to the oche. 

scrutiny

noun
  • Thorough inspection of a situation or a case. 

  • Intense study of someone or something. 

  • A ticket, or little paper billet, on which a vote is written. 

  • An examination by a committee of the votes given at an election, for the purpose of correcting the poll. 

  • An examination of catechumens, in the last week of Lent, who were to receive baptism on Easter Day. 

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