calcify vs clot

calcify

verb
  • To make something hard and stony by impregnating with calcium salts. 

  • To become hard and stony by impregnation with calcium salts. 

clot

verb
  • To form a clot or mass. 

  • To cause to clot or form into a mass. 

noun
  • A solidified mass of any liquid. 

  • A silly person. 

  • A thrombus, solidified mass of blood. 

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