extra vs redshirt

extra

noun
  • A run scored without the ball having hit the striker's bat - a wide, bye, leg bye or no ball. 

  • A supernumerary or walk-on in a film or play. 

  • An extra edition of a newspaper, which is printed outside of the normal printing cycle, for example to report an important late-breaking event. 

  • The state or trait of being over the top, of behaving in an overly dramatic manner. 

  • Something additional, such as an item above and beyond the ordinary school curriculum, or added to the usual charge on a bill. 

  • Something of an extra quality or grade. 

adj
  • Beyond what is due, usual, expected, or necessary; extraneous; additional; supernumerary. 

  • Over the top; going beyond what is normal or appropriate, often in a dramatic manner. 

adv
  • To an extraordinary degree. 

det
  • Denotes more. 

redshirt

noun
  • An athlete who spends a year not participating in official athletic activities, but does not lose his or her eligibility to participate in following years. 

  • A person responsible for loading and unloading weapons, artillery, and equipment from aircraft. 

  • An unimportant character introduced only to be killed in order to underscore the peril to the important characters; an expendable character. 

verb
  • To take on a status wherein one will spend a year not participating in official athletic activities. 

  • To hold a child out of kindergarten for one year in the hope that the child will do better academically and socially. 

  • To place an athlete in a status wherein the athlete will spend a year not participating in official athletic activities, but will not lose his or her eligibility to participate in following years. 

  • The university decided to redshirt the freshman linebacker to give him an extra year to build up his bulk. 

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