backpacking vs wandering

backpacking

noun
  • low-cost, generally urban, travel with minimal luggage and frugal accommodations. 

  • hiking and camping overnight in backcountry with one's gear carried in a backpack. 

wandering

noun
  • Travelling without preset route; roaming. 

  • Disordered speech or delirium. 

  • Irregular turning of the eyes. 

  • Aimless thought. 

  • Straying from a desired path. 

adj
  • Which wanders; travelling from place to place. 

  • Abnormally capable of moving in certain directions. 

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