reject vs work in

reject

noun
  • A rejected takeoff. 

  • A rejected defective product in a production line. 

  • Something that is rejected. 

  • An unpopular person. 

verb
  • To refuse a romantic advance. 

  • To refuse to accept. 

  • To block a shot, especially if it sends the ball off the court. 

work in

verb
  • To find time or space for, amid other things. 

  • Used other than figuratively or idiomatically: see work, in. 

  • To work out using a machine in between the sets of someone who is already using that machine. 

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