callus vs caress

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. 

caress

noun
  • A gentle stroking or rubbing. 

  • An act of endearment; any act or expression of affection; an embracing, or touching, with tenderness. 

verb
  • To touch or kiss lovingly; to fondle. 

  • To affect as if with a caress. 

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