Difference between high memory and high memory area

Can somebody please explain me the difference between the terms high memory and high memory area. I have always came across these terms. I searched a lot about these terms but still i didn't got ex开发者_如何转开发actly how they are different.As far as I know both are the parts of RAM.

High memory is used in contrast to low memory, which is a block of memory at the beginning of memory which is typically reserved for kernel use. High memory area as explained here, refers to a specific small (65,520 byte) block at the beginning of extended memory on Intel processors. You can read more here.