evaporation vs liquefaction

evaporation

noun
  • The process of a liquid converting to the gaseous state. 

  • The process in which all or a portion of liquid (in a container) is turned into vapour, in order to increase the concentration of solid matter in the mixture. 

liquefaction

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

  • The liquid or semiliquid that results from this process. 

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