>>7281045If you refer to "spooks", as seen in Stirner´s work, I´m pretty sure he used "Trugbild".
Which is more like "mirage", "unreal image".
If you though refer to "Geist" as in "Zeitgeist", it means more certain kind of mind-habit in people.
E.g., "Er hatte einen unruhigen Geist" means "He had a unresting mind"
T. German with some Geist