Chapter Text
Taxonomically, spirits are defined via their Phylum, Type, and Sub-Type. A spirit’s Phylum is a high level descriptor that encompasses both its origin and intentions. While no distinction is made between natural spirits and ghostly spirits when considering Phylum, some Phylums are fully composed of one or the other (such as Elementals being universally Natural Spirits). The type of a spirit differentiates manifestation within that Phylum, typically in power families or fetters. While two ghosts within a shared type may not share these qualities, there tends to be a conceptual through line that defines such spirits as similar. Sub-type is used to differentiate typical variations within a given type, such as Hoards manifesting both as infestations and singular spirits or Fetches becoming doppelgangers in advance age.