What is The Difference Between PostScript And Janus, Programming Languages

PostScript is an Interpreted Programming Language, while Janus is a Logic-based Programming Language
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)
What are Logic-based Programming Languages
Logic programming is a type of programming paradigm which is largely based on formal logic. Any program written in a logic programming language is a set of sentences in logical form, expressing facts and rules about some problem domain. (Wikipedia)
While PostScript is an Interpreted Programming Language, and Janus is a Logic-based Programming Language
Let us now look at the difference between the two:
What is PostScript Programming Language – A brief synopsis
It is used in the desktop publishing field and is known as a page description language. It is a dynamically typed stack-based programming language developed by John Warnock, an American computer scientist and Charles Geschke, a notable figure in the field of computer science. These developers went on to found the very well-known company, Adobe Systems.
What is Janus Programming Language – A brief synopsis
Janus supports concurrent and constraint programming.
Sources
A Complete List of Computer Programming Languages