No, they’re very different. Typically, internships are only available to currently enrolled college students. In exchange for free labor, radio stations will give college credits to student interns. Radio stations will usually assign interns where the need for free labor is greatest – which could be anything from performing administrative duties, handing out tee-shirts or bumper stickers through their promotions department, or working as the station go-fer.
At no point in time does radio station management imply, state, or promise that interns will receive focused training for eventual on-air broadcasting jobs. As a BMG apprentice, you’re being specifically trained by a broadcaster to become an on-air personality or production whiz.