A sonic boom and a loud sound are not, in fact, the same thing.
If that loud sound is roughly boom-like in shape and texture, and caused by an object moving faster through its medium than the speed of sound of its medium, then they are, in fact, the same thing.
If that loud sound is roughly boom-like in shape and texture, and caused by an object moving faster through its medium than the speed of sound of its medium, then they are, in fact, the same thing.