>>„I still say directory, never folder“
>
>Any directory is a folder, while not any folder is a directory. Since the difference was never made clear enough, people are confused. ¯\_(ツ)_/¯

This is more about the period before 1995, when M$ insisted on directory and didn't want to hear about folders, which they thought was reserved for the underworlds of Macs and Ataris. Well, there's a paragraph about that near the bottom of this article, to save myself the effort of copying it and pasting here.

There's a better confusion in hungarian, where they translated, officially, a directory as könyvtár, literally a book store/warehouse, i.e. library. Then they went on translating further, came to the item called „library“ and started pulling their hairs. Don't know how that ended.