pass the river vs peg out

pass the river

verb
  • To die. 

peg out

verb
  • To die. 

  • To mark (a territory or area) with pegs. 

  • To hang up (washing) using pegs. 

  • To finish a game of croquet. 

  • To move one's peg to the last position on the pegboard, and thus win. 

How often have the words pass the river and peg out occurred in a corpus of books? (source: Google Ngram Viewer )