colliquation vs soldering

colliquation

noun
  • The act of becoming liquid; melting. 

  • The wasting-away of parts of the body; consumption. 

soldering

noun
  • A method of joining two metallic surfaces by melting an alloy between them. 

  • A soldered joint. 

  • An instance of soldering. 

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