gone fishing vs shut down

gone fishing

adj
  • Used other than figuratively or idiomatically: see go, fishing. 

  • Unavailable, having taken time off for recreation. 

  • Absentminded. 

  • Crazy; insane. 

shut down

verb
  • To pass (another vehicle), especially quickly. 

  • To close, terminate, or end. 

  • To turn off or stop. 

  • To emotionally withdraw into oneself as a defense mechanism; to block out external stressors. 

How often have the words gone fishing and shut down occurred in a corpus of books? (source: Google Ngram Viewer )