instep vs paw

instep

noun
  • The arched part of the top of the foot between the toes and the ankle. 

  • In horses, the hind leg from the ham to the pastern joint. 

  • A section of any footwear covering that part of the foot. 

paw

noun
  • The soft foot of a mammal or other animal, generally a quadruped, that has claws or nails; comparable to a human hand or foot. 

  • A hand. 

  • Father; pa. 

verb
  • To draw the forefoot along the ground; to beat or scrape with the forefoot. 

  • To go through something (such as a garbage can) with paws. 

  • To touch someone in a sexual way. 

  • To clumsily dig through something. 

  • To gently push on something with a paw. 

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