Just to explain a little more, to connect the car to an electricity supply you need a box of tricks that handles the delivery of the power, some safety sruff etc.
Public chargers like you find in car parks generally have these electronics already in them as do chargers you may install at home. The higher power ones tend to have a cable attached so you just plug in, as do some home and destination chargers but many require a cable - the so called type 2 cable.
You can’t always find a charging point and have to use a general purpose supply like a 3 pin plug, or an industrial socket like a blue commando socket, in fact some people have these fitted at home as it can be cheaper and Tesla used to fund these. When using, because they’re general purpose sockets, you need the box of tricks, and that’s the UMC cable.
It’s a touch more complicated than that.
To explain all the options and there relative speeds, but some advice on using superchargers, it’s explained here:
Owning a Tesla