Here are some examples of the word Entity.

And there links

that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
wordnetweb.princeton.edu/perl/webwn

An entity is something that has a distinct, separate existence, though it need not be a material existence. In particular, abstractions and legal fictions are usually regarded as entities. In general, there is also no presumption that an entity is animate. ...
en.wikipedia.org/wiki/Entity

A spiritual being that may have been human once, but is no longer alive.
dsc.discovery.com/tv/ghost-lab/about/glossary-of-terms.html