Concurrency is the ability to perform other tasks while you are waiting on the current task. Imagine that you are cooking a lot of dishes for some guests. While waiting for something to cook, you are free to do other things like peeling onions or cutting vegetables. To make an analogy in the world of superheroes, a superhero might battle several bad guys at one place because most would be either recovering from a blow, arriving (or ahem waiting for their turn), which leaves our hero to deliver blows one at a time.
Parallelism is when two or more execution engines are performing a task. Continuing on our analogy, this is when two or more superheroes battle enemies as a team. This is not only a great cinema franchise ...
