callus vs chink

callus

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

  • 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. 

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

verb
  • To form such hardened tissue. 

chink

noun
  • A narrow opening such as a fissure or crack. 

  • A narrow beam or patch of light admitted by such an opening. 

  • A chip or dent in something metallic. 

  • A slight sound as of metal objects touching each other; a clink. 

  • A vulnerability or flaw in a protection system or in any otherwise formidable system. 

verb
  • To crack; to open. 

  • To cause to open in cracks or fissures. 

  • To cause to make a sharp metallic sound, as coins, small pieces of metal, etc., by bringing them into collision with each other. 

  • To make a slight sound like that of metal objects touching. 

  • To fill an opening such as the space between logs in a log house with chinking; to caulk. 

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