Yes theres a big difference between bitcoin and money. Bitcoin is a type of digital currency in which encryption techniques are used to regulate the generation of units of currency and verify the transfer of funds, operating independently of a central bank. While money is a current medium of exchange in the form of coins and banknotes; coins and banknotes collectively.
Outline that you describe the difference of the rules, I agree with you, but their intrinsic no difference to function as a currency, if we look at the future of technology, is solution for bitcoin trading in bulk and not centralized. so I consider bitcoin will gradually become legal as Japan has done today.