exchangeable vs synonymous

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. 

synonymous

adj
  • Having a similar meaning. 

  • Having an identical meaning. 

  • Such that both its forms yield the same sequenced protein. 

  • Of, or being a synonym. 

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