callus vs streak

callus

noun
  • 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. 

  • 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. 

streak

noun
  • A moth of the family Geometridae, Chesias legatella. 

  • The color of the powder of a mineral. So called, because a simple field test for a mineral is to streak it against unglazed white porcelain. 

  • The act of streaking, or running naked through a public area. 

  • An irregular line left from smearing or motion. 

  • A strake. 

  • A continuous series of like events. 

  • A tendency or characteristic, but not a dominant or pervasive one. 

  • A rung or round of a ladder. 

verb
  • To have or obtain streaks. 

  • To create streaks. 

  • To run naked in public. (Contrast flash) 

  • To move very swiftly. 

  • To run quickly. 

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