Desktop environment - Wikipedia
https://en.wikipedia.org/wiki/Desktop_environmentOn systems running the X Window System (typically Unix-family systems such as Linux, the BSDs, and formal UNIX distributions), desktop environments are much more dynamic and customizable to meet user needs. In this context, a desktop environment typically consists of several separate components, including a window manager (such as Mutter or KWin), a file manager (such as Files or Dolphin), …