What is The Difference Between Objective-C And Concurrent Pascal, Programming Languages

Objective-C is a Compiled Programming Language, while Concurrent Pascal is a Concurrent Programming Language
What are Compiled Programming Languages
A compiled language is a programming language whose implementations are typically compilers (translators that generate machine code from source code), and not interpreters (step-by-step executors of source code, where no pre-runtime translation takes place). (Wikipedia)
What are Concurrent Programming Languages
Concurrent programming is a computer programming technique that provides for the execution of operations concurrently — either within a single computer, or across a number of systems. In the latter case, the term distributed computing is used. (Wikipedia)
While Objective-C is a Compiled Programming Language, and Concurrent Pascal is a Concurrent Programming Language
Let us now look at the difference between the two:
What is Objective-C Programming Language – A brief synopsis
It is a reflective object-oriented programming language that adds messaging services to C.
What is Concurrent Pascal Programming Language – A brief synopsis
Per Brinch Hansen, a Danish-American computer scientist created Concurrent Pascal for writing operating systems and programming real-time systems.
Sources
A Complete List of Computer Programming Languages