bindle vs rucksack

bindle

noun
  • A bundle carried by a hobo (usually containing his possessions), often on a stick slung over the shoulder; a blanket roll. 

  • Any given length of cord, rope, twine, etc, used to bind something. 

  • Any bundle or package; specifically one containing narcotics such as cocaine, heroin, or morphine. 

rucksack

noun
  • a bag carried on the back or shoulder, supported by straps 

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