| Person | A human being |
| Organisation | A collection of People and Assets. |
| Place | The Notion of Where |
| Condition | A state at an instance |
| Process | A definition of a set of Actions to achieve a purpose |
| Event | Occurances |
| Outcome | The actual or desired changes of Condition that can occur as a consequence of an Event. |
| Rule | A constraint that applies to a Process |
| Environment | A Natural or Manmade Surrounding |
| Liability | A hinderance |
| Organism | A living thing other than a person |
| Document | A container for Information |
| Entity | A Physical Object or an Abstract Notion |
| Time | An Instance or a Period |
| Collection | More than one instance of one of more concepts, to which a relationship applies. |