adapt vs callus

adapt

verb
  • To make suitable; to make to correspond; to fit or suit 

  • To fit by alteration; to modify or remodel for a different purpose; to adjust 

  • To make by altering or fitting something else; to produce by change of form or character 

  • To make oneself comfortable to a new thing. 

adj
  • Adapted; fit; suited; suitable. 

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. 

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