The main difference is that in this Forth variant, the source text is completely translated into bytecode and there is no runtime in the sense of classic Forth. This makes it easy to translate the bytecode to C.
I use my own Forth to generate C code with it, which I then embed in other software.
For the interested reader:
https://github.com/loscoala/goforth
It was a great experience and I can only recommend trying to develop a programming language yourself.