Ghost

Ghosts are not "spirits, or even remnants of spirits"; rather, they are memories, typically of terrible things, like brutal death or battles.

Details
The land itself - or perhaps even the very sky - can possibly remember and thus "create" ghosts, and there is no way known to clear a place of ghosts. Ulineise prelates seem to know little about them.

Ghosts are uncommon. Laypersons possibly rarely see ghosts, or ghosts are a rare version of a kind of haunting that people can see. Ulineise prelates and/or Witnesses for the Dead can at least sometimes see them, and know them on sight. Ghosts are distinct from walking spirits.

Ghosts can appear in the garb in which they died, and even appear stained with blood. They can move as if to vocalize, but make no noise when they do so, and even when their movements would make sounds were they alive (e.g., when they hit things), they make no sound as ghosts. They can move around (e.g., walk), and even interact with each other (e.g., reenact ancient battles). Ghosts can also be large and encompass entire events (e.g., a battle).

The Hill of Werewolves was haunted by ghosts, possibly created by the revethavar of Hasthemis Brulnemar.