néventity
Neventity is a term used in some philosophical and theoretical contexts to describe a hypothetical entity that possesses no actual existence. It is essentially a concept that is conceived of but does not inhabit reality in any tangible or measurable way. The term can be used to distinguish between things that exist and things that are merely imagined or thought about.
The concept of neventity is often explored in discussions related to ontology, the philosophical study of being.
The distinction between existing entities and neventities can be important for clarity in argumentation and understanding.