Reza Rad compares dashboards to reports:
Dashboard: General
Stephen Few‘s definition of Dashboard: A dashboard is a visual display of the most important information needed to achieve one or more objectives; consolidated and arranged on a single screen so the information can be monitored at a glance.
Report: General
A Report on the other hand is any informational work. This information can be at any format. Table, Chart, text, number or anything else.
Reza then ties it back to Power BI, showing how to take advantage of both of these concepts.