fluent vs fusible

fluent

adj

  • That flows; flowing, liquid. 

  • Able to use a language accurately, rapidly, and confidently – in a flowing way. 

fusible

adj

  • Able to be fused or melted. 

noun

  • Any substance that can be fused or melted. 

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