fusible vs mellifluous

fusible

adj
  • Able to be fused or melted. 

noun
  • Any substance that can be fused or melted. 

mellifluous

adj
  • Flowing like honey. 

  • Sweet, smooth and musical; pleasant to hear (generally used of a person's voice, tone or writing style). 

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