Apparently, you don't even understand that money is ones property.
Based on that alone, one can not possibly have a dialog with such an uninformed person.
I always thought it was a medium of exchange (or even specie) rather than a property since money has no title of ownership nor do you have the exclusive right to possess it,
What sort of property do you consider it to be? I think it may be more correct to say that it is something you may (or may not) possess since, for example, when someone has a lot of money you say "he possesses riches".
Because you use one term to describe it hardly means that everyone else is wrong, uninformned, and inferior. It just means you use a different term to describe something. There are lots of words and descritpions that can be used, Finial.