callus vs rag

callus

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

  • 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. 

rag

noun
  • A piece of old cloth, especially one used for cleaning, patching, etc.; a tattered piece of cloth; a shred or tatter. 

  • A poor, low-ranking kicker. 

  • A society run by university students for the purpose of charitable fundraising. 

  • A shabby, beggarly fellow; a ragamuffin. 

  • A coarse kind of rock, somewhat cellular in texture; ragstone. 

  • A ragtime song, dance or piece of music. 

  • A curtain of various kinds. 

  • A sail, or any piece of canvas. 

  • Sanitary napkins, pads, or other materials used to absorb menstrual discharge. 

  • A newspaper or magazine, especially one whose journalism is considered to be of poor quality. 

  • Tattered clothes. 

  • A ragged edge in metalworking. 

verb
  • To dance to ragtime music. 

  • To play or compose (a piece, melody, etc.) in syncopated time. 

  • To drive a car or another vehicle in a hard, fast or unsympathetic manner. 

  • To scold or tell off; to torment; to banter. 

  • To decorate (a wall, etc.) by applying paint with a rag. 

  • To become tattered. 

  • To tease or torment, especially at a university; to bully, to haze. 

  • To cut or dress roughly, as a grindstone. 

  • To break (ore) into lumps for sorting. 

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