raik vs stumble

raik

verb
  • To walk; to roam, to wander. 

  • To roam or wander through (somewhere). 

  • Of animals (especially sheep): to graze. 

noun
  • A walk, or a journey taken (especially on foot); the act of taking a walk or journey. 

  • The pastureland over which animals graze; a range, a stray. 

  • The movement of animals while grazing. 

  • A journey to transport something between two places; a run; also, the quantity of items so transported. 

stumble

verb
  • To trip or fall; to walk clumsily. 

  • To cause to stumble or trip. 

  • To make a mistake or have trouble. 

  • To strike or happen (upon a person or thing) without design; to fall or light by chance; with on, upon, or against. 

  • To mislead; to confound; to cause to err or to fall. 

noun
  • An error or blunder. 

  • A fall, trip or substantial misstep. 

  • A clumsy walk. 

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