smelting vs synthesis

smelting

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

synthesis

noun
  • The reaction of elements or compounds to form more complex compounds. 

  • The combination of thesis and antithesis. 

  • The reunion of parts that have been divided. 

  • An apt arrangement of elements of a text, especially for euphony. 

  • Creation of a complex waveform by summation of simpler waveforms. 

  • The formation of something complex or coherent by combining simpler things. 

  • A deduction from the general to the particular. 

  • In intelligence usage, the examining and combining of processed information with other information and intelligence for final interpretation. 

  • The uniting of ideas into a sentence. 

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