Is everything that doesn't have a location in space and time supernatural? If so, that makes the number two supernatural. Does everything that cannot be subsumed under deterministic laws supernatural? That would make quanta supernatural, and human agents, on the libertarian view of free will. Does unobservability make something supernatural? That would make electrons, quarks and strings supernatural.
If you say "something like God, or the soul, or a ghost," then I maintain your definition is question-beggingly trying to include what you want it to include, and is not a principled definition.