Definition of stage description
Every stage has a stage description.
The description describes the state of a job whilst it is on this stage, for example where the milestone achieved is 'Job reviewed' the stage description would be something like 'Awaiting review'.
The job card will show the description of the current stage just above the progress buttons (marked 1 in the image below). By default this is located in the top right corner of the job card; however, you can configure this to appear elsewhere (right or left) and if you have > 1 sub-system active then you will have 1 of these boxes for each sub-system.
You will also see your stage descriptions in any of the progress overview widgets, such as the one pictured below.