The most fundamental difference of bitcoin and real money is its shape. real money in the form.
while bitcoin have a digital system that is not visible. but both have in common is both used as currency.
both have a value that can be used for life.
although there are so many other reasons which cause the difference between bitcoin and real money. i think the main difference between the two currencies is that bitcoin is digital currency while fiat is physical currency, bitcoin is decentralize not in control of any person. while fiat is centralize and under control of each governments. bitcoin has the same value everywhere while fiat value different from place to place.
true, the most important difference is that bitcoin is in the digital world and used internationally, while the real money, or fiat, can only be used with a maximum in a country. Another distinguishing thing is, bitcoin is very easy to get on the internet, simply by utilizing the faucet, we can produce bitcoin. while the real money, requires no special skills or a significant sacrifice to get it.
So basically what you're trying to say by that is that both bitcoin and real money don't require any special skill or significant sacrifice? I don't see doing faucets as requiring a special skill.
Some countries do not recognize bitcoin as currency yet, so that’s a big difference right there, right away. There are still debates as to whether it is to be considered a currency or property. While in Japan, it is a virtual currency but not yet considered as a currency that can be used for local purchases.
It will be, in two months. It has always been a virtual currency all over the world and it is not yet considered as currency that can be used for local purchases most places in the world so I don't know why did you pick Japan specifically. I guess it's because you read somewhere that Japan is about to make it a legal way to pay for purchases.