The term “ontology” is used in different communities multifariously, in a nearly anarchic way. Ironically, the major function of ontology itself is to explicate the meaning of terms and concepts. Therefore, different conceptions of this term impede collaboration and exchange of expertise between different domains and communities. Thus, providing a clear image of the different notions of ontology
... [Show full abstract] is a precondition of communication. This paper studies different notions of ontology and attempts to compare these different conceptions, and to organize them into a model to facilitate collaboration in this field. The use of an ontology gamut model is proposed instead of the one-dimensional ontology spectra used in the past. This model can be used as the basis for agreement to clarify the term ontology among different communities by providing levels of formality, semantics and complexity. The coordinates of each ontology in this gamut helps with understanding the specific conception of that ontology.