Fungible ?
For God's sake, doesn't anyone speak "English/American/Canadian..oh you know what I mean.... anymore in certain arcane circles ?
Obviously not - send 'em over to the Levison Enquiry, Murdoch and Cameron could probably use their services.......
Why not say interchangeable ?
I got so annoyed about having to look it up I nearly took up macrame for something constructive to do with my life.....
And yes, lawyers/professors/word geeks fully appreciate the vital nuances and legal niceties this word has as against any other understandable equivalent, but it was like having Bush in the White House again ...........
I'm sorry if that offends, but if you need to look it up, "fungible" probably don't worry you...