One of the difference of bitcoin and real money is that, real money is easily to disappear unlike that of bitcoin. Why? Because when people has lot's of money when they see something that attracts their eyes and sees it , they would always grab the oppurtunity to buy it especially when they have enough money. Unlike when you have bitcoin, since not all stores here are accepting bitcoin for payment, they would first exchange it for the certain currency, more time to consume and more time to think of buying certain things. unlike that of a money you would just give it to the cashier and then boom your cash are instantly disappearing and that's one of the difference of bitcoinfrom real money.