My vote goes for "ProcessDefinition" and "ProcessInstance". As other people mentioned, Process can mean both, depending on the persons speaking. This can load to confusion, and I think saying "ProcessInstance" is maybe more verbose, but at least totally clear. By the way, this is indeed basically one of the first things we try to teach people in the trainings (even business people in our BPMN trainings), the difference between a process definition and instance... Last remark: Same I would say for TaskDefinition & TaskInstance (when we come to this point)... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4190745#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...