"Ontological" refers to the branch of philosophy known as ontology, which studies the nature of being, existence, and reality. It explores questions about what entities exist and how they can be categorized and related to one another. This field examines concepts such as objects, properties, and their relationships in the context of existence. In various disciplines, including philosophy, computer science, and linguistics, the term "ontological" is used to describe frameworks or models that define the types of entities and their interactions within a specific domain. For example, an ontological model in computer science might outline how data entities relate to one another in a database.