give in vs rack up

give in

verb
  • to relent, yield, surrender or admit defeat 

  • to droop the head 

  • to collapse or fall 

rack up

verb
  • to defeat severely, to thrash 

  • to arrange in a rack 

  • to acquire, to gather together. 

  • to gain (points etc.; in a game or sport), to accumulate 

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