The central question behind these categories is how the thing is apprehended and what constructive work the mind performs.
TypeDistinguishing feature
SensoryThe object or its material is available through external sense
KhayālīSensible components form an unreal composite
WahmīA sensible-looking form is attributed to a supposed entity
WijdānīA state is experienced immediately inwardly
An imagined scene can be built from sensible elements; a state invisible to the eyes need not be merely imaginary. Classification turns on the mode of cognition, not on superficial appearances.