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== Terminologies and Ontologies {nid 2T8J} ==

Clearly terminologies and ontologies are related and ontologies use terms. Formal ontology may provide detailed axioms and definitions along with comments to "explain" terms using natural languages. It is helpful to distinguish concepts like river, stream, creek, brook, tributary and rivulet. Likewise we strive to divide reality into types like tree, bush,sapling. But as human conceptualization these may have fuzzy and dynamic boundaries.
One distinction that some make between terminologies and ontologies is in terms of the use of logics as part of definitions. If a formal definition in some form of logic is not required, then we have a terminology. Thus even detailed definitions such as have been captured in data dictionaries comments on terms in data models and in enterorise models are terminologies, not ontologies in that the definitions are stated in natural language. See http://ontolog.cim3.net/forum/ontolog-forum/2011-05/msg00000.html for a discussion and debate of this idea. {nid 2T8K}