What is non example?

Non-example refers to a situation or an object that is not a proper example of a particular concept or phenomenon. It is used to clarify or differentiate between what is considered as an example and what is not. For instance, if someone is asked to provide examples of mammals, a non-example would be a fish, as fish belong to a different class of animal, known as aquatic vertebrates. Non-examples are essential in understanding a subject's limits and its boundaries.