1. An "Electronic Cash System" or "Electronic Payment System" that involves no censorship would definitely mean that you are your own bank since you are in total control of your funds and there isn't a third-party involved in keeping or managing them at all.

2. Since Bitcoin is basically a currency itself, so it can be called an "Electronic Currency", or a "Digital Currency". Now why is it called a "Cryptocurrency"? I will tell you why. The word "Crypto" means something that is concealed, or kept secret. So the fact why Bitcoin or all other digital currencies running inside a blockchain are called "Cryptocurrencies" is that they are, to an extent, untraceable or anonymous when it comes to knowing the owner of an address holding funds or an address a transaction has been generated from. Otherwise, there is no denying the fact that Bitcoin is an Electronic Currency.

3. A currency that is used globally is tend to be called a "Global Currency". There is nothing wrong in calling Bitcoin or any other digital or crypto currency to be global currencies since their usage is not limited to one particular country or only to one side of the Globe, but they are used everywhere, and that is why they are called "Global Currencies".