It would be a absolute key
A location of a file is specified by its File Path.
Path
File Path.
A file path is a notation that indicates a file's location on your computer. The file path leads you through the windows files system to your file.
A file path is the exact location of a data file within the drive and directory that it is stored in. It is very important for an investigator to document the specific file path that was used to find the evidence on the computer. This is because the file path gives you the exact location to the file needed and the file path specifies how you found the file in the first place.
path
a file path descriptor, showing your location in the file structure
It tells you a files location on your computer.
Path
A path name is the location of the file name. example: C:\Users\Desktop\Example.txt A file name is file itself. example: Example.txt
The specific path of a file can be easily located. You can just right click the file to view it's properties and path.
A file path will usually just be the fully qualified location the file is located in. Some platforms may even include the filename in the file path, but that's not always the case. A file path may look like this: /usr/share/apps Whereas a filename is things like "superduper.mp3" and the like.