callus vs ribbon

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. 

ribbon

noun
  • A long, narrow strip of material used for decoration of clothing or the hair or gift wrapping. 

  • An inked strip of material against which type is pressed to print letters in a typewriter or printer. 

  • A painted moulding on the side of a ship. 

  • A bearing similar to the bend, but only one eighth as wide. 

  • A subheadline presented above its parent headline. 

  • A narrow strip or shred. 

  • In ice cream and similar confections, an ingredient (often chocolate, butterscotch, caramel, or fudge) added in a long narrow strip. 

  • A bandsaw. 

  • A watchspring. 

  • A sliver. 

  • A toolbar that incorporates tabs and menus. 

  • An awareness ribbon. 

verb
  • To decorate with ribbon. 

  • To stripe or streak. 

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