Unix Purists Are Fun At Parties

hey now. directory is also the official term in microsoft systems: directory An object in a filesystem that contains files and other directories.

https://www.microsoft.com/en-us/language/Search?&searchTerm=directory&langID=262&Source=true&productid=0

edit:
Also from Win32 documentation "Local File Systems": Directories. A directory is a hierarchical collection of directories and files.
https://learn.microsoft.com/en-us/windows/win32/fileio/file-systems