callus vs dent

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. 

dent

noun
  • A shallow deformation in the surface of an object, produced by an impact. 

  • A type of maize/corn with a relatively soft outer hull, and a soft type of starch that shrinks at maturity to leave an indentation in the surface of the kernel. 

  • A sudden negative change, such as loss, damage, weakening, consumption or diminution, especially one produced by an external force, event or action 

  • A slot or a wire in a reed 

  • A minor impact or effect made upon something. 

  • A tooth, as of a card, a gear wheel, etc. 

verb
  • To impact something, producing a dent. 

  • To develop a dent or dents. 

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