WBS
In the military - yes, but not in the civil world.
MATS 1 App E 3.1. They give a table of ATC service against R/T suffix used.
It's interesting to note the comments about Radar:
ATC Service - Approach Radar Control Arrival / Departure.
Suffix - Director / Departure (Radar when tasks combined/ Arrival (when approved))
So reading that suggests that if you're a Radar controller doing arrivals and departures then radar is what you say.
CM