amalgamation vs liquefaction

amalgamation

noun
  • The result of amalgamating; a mixture or alloy. 

  • The production of an alloy of mercury and another metal. 

  • The process of amalgamating; a mixture, merger or consolidation. 

liquefaction

noun
  • The liquid or semiliquid that results from this process. 

  • Process of being, or state of having been, made liquid (from either a solid or a gas) 

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