exchangeable vs inconvertible

exchangeable

adj

  • Able to be exchanged. 

  • Having an associated right to be exchanged for another form of financial security. 

noun

  • Any financial instrument with an associated right to be exchanged for another form of financial security. 

inconvertible

adj

  • Not convertible 

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