callus vs cushion

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. 

cushion

noun
  • A pad on which gilders cut gold leaf. 

  • a sufficient quantity of an intangible object (like points or minutes) to allow for some of those points, for example, to be lost without hurting one's chances for successfully completing an objective. 

  • A soft mass of material stuffed into a cloth bag, used for comfort or support; for sitting on, kneeling on, resting one's head on etc. 

  • The lip around a table in cue sports which absorbs some of the impact of the billiard balls and bounces them back. 

  • A mass of steam in the end of the cylinder of a steam engine to receive the impact of the piston. 

  • An engraver's pad. 

  • Money kept in reserve. 

  • The pillow used in making bone lace. 

  • A pad supporting a woman's hair. 

  • The rubber of an electrical machine. 

  • The dancer in the cushion dance who currently holds the cushion, or the dance itself. 

verb
  • To furnish with cushions. 

  • To absorb or deaden the impact of. 

  • To seat or place on, or as on a cushion. 

  • To conceal or cover up, as under a cushion. 

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