Just a random passing thought…..
In Windows, we call them folders but on *nix we call them directories.
However the catch is in DOS, we also used to call them directories. Somewhere along the way (presumably the switch from Windows 3.1(1) to Windows95) the nomenclature was changed for this entity and it was renamed from a directory to a folder.
Funnily enough, i’ve never actually caught myself using the wrong nomenclature until now….I’ve always referred to them as directories when in Linux or in the DOS-shell, and referred to them as folders when working with the incumbent.