callus vs gouge

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. 

gouge

noun
  • A chisel with a curved blade for cutting or scooping channels, grooves, or holes in wood, stone, etc. 

  • Soft material lying between the wall of a vein and the solid vein of ore. 

  • A bookbinder's tool with a curved face, used for blind tooling or gilding. 

  • An incising tool that cuts blanks or forms for envelopes, gloves, etc., from leather, paper, or other materials. 

  • An impostor. 

  • Information. 

  • An act of gouging. 

  • A cut or groove, as left by a gouge or something sharp. 

  • A cheat, a fraud; an imposition. 

verb
  • To make a groove, hole, or mark in by scooping with or as if with a gouge. 

  • To cheat or impose upon; in particular, to charge an unfairly or unreasonably high price. 

  • To use a gouge. 

  • To dig or scoop (something) out with or as if with a gouge; in particular, to use a thumb to push or try to push the eye (of a person) out of its socket. 

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