procure vs rack up

procure

verb
  • To acquire or obtain. 

  • To obtain a person as a prostitute for somebody else. 

  • To induce or persuade someone to do something. 

rack up

verb
  • to acquire, to gather together. 

  • to arrange in a rack 

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

  • to defeat severely, to thrash 

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