make lighter vs pour out

make lighter

pour out

verb
  • To talk volubly and deeply. Usually implies telling the truth. 

  • To leave a place quickly, and in large numbers. 

  • Used other than figuratively or idiomatically: see pour, out. 

  • To serve a drink into a cup or glass. 

  • To distribute or spread (something), as if it were a liquid. 

How often have the words make lighter and pour out occurred in a corpus of books? (source: Google Ngram Viewer )