dissolution vs smelting

dissolution

noun
  • Disintegration, or decomposition into fragments. 

  • The termination of an organized body or legislative assembly, especially a formal dismissal. 

  • The quality of being dissolute. 

  • Dissolving, or going into solution. 

smelting

noun
  • The process of melting or fusion, especially to extract a metal from its ore. 

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