callus vs scrawl

callus

noun
  • The new formation over the end of a cutting, before it puts out rootlets. 

  • 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. 

  • 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. 

scrawl

noun
  • A broken branch of a tree. 

  • Writing that lacks literary merit. 

  • Irregular, possibly illegible handwriting. 

  • A hastily or carelessly written note etc. 

  • The young of the dog-crab. 

verb
  • To write in an irregular or illegible manner. 

  • To write something hastily or illegibly. 

  • To write unskilfully and inelegantly. 

  • To creep; crawl; (by extension) to swarm with crawling things 

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