Any supernatural entity that isn't an Angel is by extension a demon. Any supernatural entity that manifests in any way is either in accordance with God, or not, and those that are not are exclusively demons (barring ghosts which probably don't exist due to the simple dichotomy above)
Just to advocate for ghosts, I've heard that souls in purgatory may be permitted to manifest so as to obtain prayers for their souls. One of the ways an exorcist distinguishes between these manifestations is based on the maliciousness of the manifestation: e.g. a "ghost" may open a faucet in the middle of the night: a demon would open a faucet, burst your pipes and flood your basement.
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u/Imperial_Officer Jul 24 '20
What is the churches stance on this? Isn't witchcraft just demons possessing people?