straying vs wandering

straying

noun
  • The act of one who strays; deviation or sin - often sexual infidelity. 

wandering

noun
  • Straying from a desired path. 

  • Disordered speech or delirium. 

  • Irregular turning of the eyes. 

  • Aimless thought. 

  • Travelling without preset route; roaming. 

adj
  • Which wanders; travelling from place to place. 

  • Abnormally capable of moving in certain directions. 

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