Why does it irritate me so much when people call a directory a "folder"? There's a clear difference between the two!
A directory is a hierarchical system for organising data across multiple levels, while a folder typically organises data at a single level.
For instance, Microsoft Windows uses the concept of special folders to present the computer's contents in a consistent way. This spares users from dealing with absolute directory paths, which can vary between Windows versions and installations.
When referring to a container for documents, "folder" is more accurate. Meanwhile, "directory" describes the structured way files and folders are stored on the computer. This distinction often depends on how it’s accessed: in Unix systems, /usr/bin/ is usually called a directory in the command line, but through a graphical file manager, it’s often labelled a folder.