Did you read the FAQ I pointed to?
People use the terms incorrectly all the time.
Absolute paths start with / and refer to a location from the root of the current site (or virtual host).
That is a server-relative path. Not an absolute path. An absolute path is a complete URL that identifies the resource.
A key phrase to attend to here is "
a location from the root of the current site". If it's "from" something else, it's relative, not absolute.
Relative paths do not start with / and refer to a location from the actual location of the document the reference is made.
This is a page-relative path.
It's kind of like the term "application server". People argue endlessly over what it means.