Additional material for chapter 7 of Ontologics and Communication online course

List of relation types:

1. Hierarchies
2. 1. superclass-subclass (is a superclass)
   2. instance class (is an instance of a class)
   3. part-whole (is a part of)
3. Representation (refers to)
4. Language and meta-language (allows you to interpret the language)
5. Agent and role (plays a role)
6. “Believe in” and “assume that”
7. “I wish” and “must have”
8. When you declare any object, you give it an existence relation
9. Any other relationship