I would refer to an entity as a spirit or ghost that I am unfamiliar with as a general term.
Reference: https://www.quora.com/What-does-the-word-entity-mean-in-context-with-attachment-to-the-soul
I would refer to an entity as a spirit or ghost that I am unfamiliar with as a general term.
Reference: https://www.quora.com/What-does-the-word-entity-mean-in-context-with-attachment-to-the-soul
Lotus & Cranberries Blog 