You can of course call these directories whatever you want, but there's no good reason not to call them something that anyone would understand. This isn't as difficult as it might initially seem. You'll just have to keep trying until you find the correct device. To make this possible, you'll have to create a symbolic link to the device. So a link can let you access another file.
Links can be very useful.
If you have a file that you want to be seen from several directories, you can create a link in each directory, that points to the one copy of the file. This way, you won't have to keep several copies of the file, spread over your hard drive. If you don't need them, you can always remove them just like ordinary files, with the 'rm' command. This removes the link, but not the file that is being linked. You'll have to unmount it before you can eject it.