What is the Difference Between Parallel Universe and Multiverse

The question belongs to the series of inter-related questions and arguments that are somehow related to the Parallel Universe Theories. There are multiple point-of-views when it comes to defining the Difference Between Parallel Universe and Multiverse. Let's discuss the two concepts of Parallel Universe and Alternate Universe in the first place. Parallel Universe: The concept of Parallel Universe stands for the theory that arises from the concept of big-bang theory. Big bang theory...