What are the differences between a vocabulary, a taxonomy, a thesaurus, an ontology, and a meta-model?

What are the differences between a vocabulary, a taxonomy, a thesaurus, an ontology, and a meta-model?

From the website www.metamodel.com, this is a nice concise little article on defining and giving the borders between these five important concepts.

There is a nice comment (from Michael Uschold of Boeing) that summarizes the commonalities, as well as the differences. Good commenting. But then again, Mr. Uschold has quite a nice name going for himself in the Semantics and Semantic web community. See this paper for a good example.

Tags: semantic, taxonomy, metamodel, thesaurus, ontology