Vintage Boombox

Ok, I know old radios weren’t called boomboxes, but hear me out. It’s a box, and it plays music, is there any real difference? At what point does a radio become a boombox? When you add a tape deck? Now granted I don’t really see one of these on the street next to some cardboard blasting RUN DMC, it’s more likely to in a sitting room with some Glen Miller streaming out. But that doesn’t mean grandma isn’t wearing parachute pants and a Kango though. Builder adde51.