indurate vs precast

indurate

adj
  • Hardened, obstinate, unfeeling, callous. 

verb
  • To inure; to strengthen; to make hardy or robust. 

  • To harden or to grow hard. 

  • To make callous or unfeeling. 

precast

adj
  • Cast previously in another location. 

verb
  • To cast in a location other than where to be installed. 

noun
  • Structural members made of concrete, ready for installation. 

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