Hello! I wanted to know the difference between the noise of a bad wheel bearing and bad brakes.?

I recently went to National tire and battery to get an oil change, also to have them do a general inspeciton since its free. so they did it and they told me that my whole braking system is bad, the calipers, brake pad, and rotors, so basically the whole system. anyway i knew that there was something going on especially with the driver side wheel because i hear a whurring noise when i accelerate, I guess you would describe it as so. when i push down on my brakes they do float so i know that the brakes need to be done, also they said that my side the caliper is broken and fused so i want to know if that could cause that whurring noise or could it be the wheel bearing?