light at the end of the tunnel vs rift

light at the end of the tunnel

noun
  • A vision of a bright light, surrounded by darkness, seen by a dying person 

  • A better situation after long hardship. 

rift

noun
  • A break in the clouds, fog, mist etc., which allows light through. 

  • A chasm or fissure. 

  • A shallow place in a stream; a ford. 

verb
  • To form a rift; to split open. 

  • To belch. 

  • To cleave; to rive; to split. 

How often have the words light at the end of the tunnel and rift occurred in a corpus of books? (source: Google Ngram Viewer )