pennies vs shoestring

pennies

noun
  • An unspecified, but very small amount of money. 

shoestring

noun
  • Chiefly in on a shoestring: very little money; a tight budget. 

  • A long, narrow cut of a food; a julienne. 

  • The string or lace used to secure a shoe to the foot; a shoelace. 

  • An object that is long and thin, like a shoestring (sense 1). 

adj
  • Of a catch or tackle: made near the ground, close to a player's shoes. 

verb
  • To tackle (a player) using a shoestring tackle (“one made near the ground, close to a player's shoes”). 

  • To catch (a ball) using a shoestring catch (“one made near the ground, close to a player's shoes”). 

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