👉 Ontologies are sets of concepts, rules, or other information that represent a shared understanding and hierarchy among entities in a system. These ontologies can be used to manage knowledge about an object's attributes, relationships, and behavior within a domain or system. In simple terms, an ontology is like a dictionary for the subject matter being studied. It contains all the concepts related to a particular topic, with each concept assigned a unique name, which serves as a label or identifier for that concept in the domain