So I noticed this question has not been asked directly;
What is this "Swap Area" people keep referring to when it comes to installing Ubuntu?
The Swap Area is basically extra RAM that lives on your hard drive. The Windows equivalent would be the Pagefile. It is much slower than physical RAM, but is necessary in many cases to keep a system running smoothly.
You can either make a separate partition for your Swap Area (recommended), or you can go the windows way and make a Swap File on your system partition (not recommended).
A good baseline if you have no idea how big to make it (and the default in the Ubuntu installer) is to have the same amount of swap as you do RAM. That being said, this is only a very general guideline, and depends on how you use your system. There is nothing wrong with having no swap space. If you start running out of RAM, just make your swap space larger.
From Community Help:
Hope this helps to understand and get basic knowledge about swap.