In real life, a project is an amount of work you do internally or for a client. It has a clear beginning and end. A project in the system is how you organize that same amount of work, or some part of it, with the available features.
There are three kinds of states that can be used to reflect what is happening with the project in real life as well as what one can do with it in the system. Accordingly, the list of projects is divided into the following tabs: Active, Inactive, and Archived.