Directory is a classical term used since the early times of file systems while folder is a sort of friendly name which may sound more familiar to Windows users. The main difference is that a folder is a logical concept that does not necessarily map to a physical directory. A directory is an file system object.What is a directory within a directory called?
Computers store data in a series of directories. Each directory, or folder, may contain files or other directories. If a directory is located within another directory, it is called a subdirectory (or subfolder) of that folder.