multi-processing vs multi-threading

I was given the question "what is difference between multi-processing and multi-threading" as an interview question. Today, I will not use big grammatical words to explain the differences between multi-processing and multi-threading to make it very easy for everyone to understand.

first, we need to understand these terms

1. Processor (CPU) is a chip that exists on the computer's mother-board, it executes the basic instructions that are given to it. It receives commands and perform the operations the user has requested. For example, the CPU processed the instructions to use a web browser to open and display this web page on your computer. refrence

2. Process is a program in execution.

Now that we have established the facts, let us get into the details.

Multi-processing

This is when a computer has two or more processors (CPUs). Todays' computers can have 2,4,8 CPUs. Device manufacturers leverage multiple CPUs to increase application performance and responsiveness (no lagging).
In multi-processors, we can run multiple programs (music app, gaming app, MS-word) at the same time.

Multi-threading

Firstly, a thread is a unit of a process.

Multi-threading means many threads run in the same parent process (program) at the same time. For example, using MS-word is a process (program), while using spell-check and copy-paste in MS-word is a thread.

Creating processes for each task is not an effective method. Therefore, a process is divided into multiple threads. These multiple threads are running on the process at the same time.

Differences between muti-processing and multi-threading

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