Existent

"Existent" is a concept identifying an irreducible primary, and thus can only be defined ostensively. A circular definition of "existent," which will help indicate what I'm talking about, is that it is "something that exists, be it a thing, an attribute or an action."

Examples

Look at something around you. That is an existent.

Consider one of its properties, like its shape or location or color. That is also an existent.

Consider your memory of looking at that object. That is also an existent.

A purple flying elephant is not an existent. However, the thought about a purple flying elephant that you had while reading the previous sentence, is an existent.