congelation vs incrassation

congelation

noun
  • The state of being congealed. 

  • The act or process of passing, or causing to pass, from a fluid to a solid state, as by the abstraction of heat; the act or process of freezing. 

  • That which is congealed. 

incrassation

noun
  • A thickening or swelling. 

  • The process of thickening. 

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