callus vs paw

callus

noun
  • A hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use. 

  • A shining area on the frons of many species of Tabanomorpha (horse flies and relatives). 

  • The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistency, but is ultimately converted into true bone and unites the fragments into a single piece. 

  • The new formation over the end of a cutting, before it puts out rootlets. 

verb
  • To form such hardened tissue. 

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 callus and paw occurred in a corpus of books? (source: Google Ngram Viewer )