Insomnium | Dream caused by physiological circumstances such as overeating; no prognostic value |
Visum | Dream experienced in the transition between waking and sleeping; no prognostic value |
Oraculum | Prognostic dream in which a person of authority verbally conveys information about the future |
Visio | Prognostic dream in which future events are rehearsed in plain sight |
Somnium | Prognostic dream that reveals future events in symbolic visuals |