What’s the difference between multiprocessing and multithreading?

Question

What’s the difference between multiprocessing and multithreading?

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Answer 1

Multiprocessing splits up a task into multiple pieces that can be processed simultaneously by multiple cores. This can improve performance if the computer has multiple cores and the tasks can be divided up in a way that takes advantage of that.
Multithreading is a form of multiprocessing where each task is assigned to its own core, but all cores share a single memory space. So multithreading is better for tasks that can be broken down into smaller parts and don’t require a lot of communication between threads. If the tasks do require communication, then multiprocessing might be a better option.