What is the difference between buffer and cache memory in Linux?

Question

To me it\'s not clear what\'s the difference between the two Linux memory concepts : buffer and cache. I\'ve read through this post and it seems to

Answer 1

"Buffers" represent how much portion of RAM is dedicated to cache disk blocks. "Cached" is similar like "Buffers", only this time it caches pages from file reading.

quote from:

• https://web.archive.org/web/20110207101856/http://www.linuxforums.org/articles/using-top-more-efficiently_89.html