If nobody accepts it then it worthless. Has nothing to do with hoarding
Fiat currencies are essentially IOUs, but not money in general--gold and bitcoins being two examples of money that is not debt-based. If the central banks around the world that are hoarding dollars in the form of reserves were to suddenly decide they don't want to hoard them anymore then the dollar would certainly collapse in value. Has everything to do with hoarding. Hyperinflation is the result of no one willing to hoard the currency. (When I use the term "hoard" I consider it to be synonomous with "hold" or "save".)
Umm no. Gold isnt money anymore. Bitcoin was only a money inside silkroad market.
Wrong again. Even central bankers know gold is money...that's why they hoard it.
1 - It needs to be a unit of account
2 - It needs to be a store of value
3 - It needs to be a medium of exchange
Gold would not meet this criteria because people will rarely deal in terms of gold, therefore it is not a medium of exchange. Governments hold gold because of it's large and stable value