not loaded with technical distinctions that most people will find confusing needlessly.
I provided technical details since you seem to be asking for them. There's no need to know any technical details. All you need to know is that you need rakudo to compile the program, and parrot to run it.
They can't share the same name since they're unrelated projects.
I always found Java naming conventions terrible.
It's the web site that was terrible. The distinction is actually quite straightforward.
- JDK — Sun's distro for developers. Includes their compiler (javac) and their runtime (java).
- JRE — Sun's distro for users. Includes their runtime (java).
JVM is an imaginary machine whose assembler language is Java Bytecode, the product of Sun's compiler. It's not a term you should have to deal with.