After reading the paper by Tom Gruber, I decided to put visually all the terms he used for describing what is an ontology. Basically an Ontology is the statement of a logical theory, or a specification of a conceptualization. Therefore of interests seems to be the role of the Agents, which operates the translation from the real world to the conceptual one. This agent commits to the ontology if its discoverable actions are consistent with the definitions of the ontology.