Several users has described the major difference that's the virtual usage. It cannot be used same as our fiat currency. It requires some basic understanding for using it as everything is linked to technology and internet. Real money is simple that even an uneducated man can use without difficulty.
I agree, some people will even say bitcoin is illegal because it comes from the deepweb. But for those people that are technology literate, they will always know bitcoin and how it works. People around me don't know anything at all about bitcoin, they just know i earn online and the money i earn were always sent to my bank account.
This close minded people just loses their chance to make money with bitcoin, they need to read before they judge, true it's use in deep web but big circulation is not happening their, if they will not adopt we do not have problem with it, we should talk to people who are open minded and go with the change.
Digital currency is the future of money and if some people are still skeptical about its advantages, it is their loss and somebody else's gain. The early adopters are lucky enough to benefit from what bitcoin can give them and the ones who will regret not getting onboard are those who think bitcoin is used only for criminal activities and there are and those who believe that some risks involved with holding and owning these types of digital currencies.