Can someone explain the exact definition of concurrency in simple terms? or What’s the real-world def

Concurrency = managing multiple tasks in progress at once. Parallelism = executing them simultaneously.

A good analogy: Concurrency is like a teacher grading papers while answering student questions. Parallelism is having two teachers grade separately.

For tools, check out Python’s `asyncio` for concurrency or `multiprocessing` for parallelism.