Windows Powershell vs Powershell Core: What's the difference?

Now, If you are windows user...
Search up "Windows Powershell" in your Search Bar. Did you see this -

If yes, that is Windows Powershell! Now, open it.
Upon opening, do you see this message:

The message is:

"Try the new cross-platform PowerShell https://aka.ms/pscore6"

You might be wondering...

What is this new Powershell version?

That is version Powershell core 6. That is the new version of Powershell which is called "Powershell core".

Differences

They both are similar, but not the same.

Powershell core is a lineup of Powershell versions from Core 6.0 to the latest stable release 7.5.3

Windows Powershell is a lineup of Powershell versions that are no longer officially supported by Microsoft. These are versions from PS 1.0 to PS 5.1

Here is something common: They both run on a version of .NET

Table explaining

Here is a table explaining the differences:

Comparsion	Windows Powershell	Powershell core
Release Date	November 14, 2006	January 10, 2018
Source	Closed-Source	Open-source, avaliable in Github
.NET version	.NET framework	.NET core
Support	Ended support on Aug-2016	Still alive (Older versions are not updated)
Platforms	Windows Only	Windows, Linux, MacOS and UNIX-based/BSD-based Platforms