After building a report, you may toggle on "Display To Dashboard" for the report. Once this is toggled on, there is no distinction between the field that lives in the report section which is titled "Dashboard" and the one that lives at the top right of the account also titled "Dashboard." Clients with limited access to reports and dashboards may not understand the distinction. I suggest title the field "Dashboard" in the report section to say "Report Dashboard" which adds more clarification and distinction between the report dashboard and the account level dashboard.
Distinction Between Dashboard Types
a1: most a2: medium a3: no