What is The Difference Between Curry And PCASTL, Programming Languages

Both Curry and PCASTL are Interpreted Programming Languages
What are Interpreted Programming Languages
An interpreted language is a programming language for which most of its implementations execute instructions directly, without previously compiling a program into machine-language instructions. The interpreter executes the program directly, translating each statement into a sequence of one or more subroutines already compiled into machine code. (Wikipedia)
Since Curry and, are both Interpreted Programming Languages
Let us now look at the difference between the two:
What is Curry Programming Language – A brief synopsis
It is a functional logic programming language that implements functional and logic programming as well as constraint programming, wherein the relationships between variables are stated in the form of constraints.
What is PCASTL Programming Language – A brief synopsis
An acronym for by Parent and Childset Accessible Syntax Tree Language, it is a high-level language developed by Philippe Choquette and falls under the class of interpreted computer programming languages. It is specially designed for self-modifying code.
Sources
A Complete List of Computer Programming Languages