How can one differentiate nonexistent entities?

Question

How is it possible for things that do not exist to not be the same? How can one differentiate nonexistent entities? How can I know the difference between ghosts and werewolves if neither exist?

Answer 1

But you do know the difference between ghosts and werewolves. All that is created has a Creator and that Creator creates from an idea of what is to be created. Now the idea exists before the thing comes into being and can exist when the thing goes out of being.

When you say "this is not a banana" it could be a small foreign car or a Pink Floyd album. WE say X exists but the X must precede the existence.