So what exactly is a nuclear warhead? I know what a nuclear bomb is. The ones dropped on Hiroshima and Nagasaki in WWII. I also know they took the lives of hundreds of thousands of people. So I was looking for how many bombs countries had and I saw that the U.S had 7,000 and Russia had 8,500 warheads. I was pretty shocked because I thought warhead meant bomb. How could there be 15,000 plus atomic bombs! One is bad enough but that many?! But I am not sure. Does the term warhead mean the same things as a bomb? If not, how many warheads are in an atomic or nuclear bomb. Say for example, how many atomic bombs could the U.S make with 7,000 warheads and how powerful. Thank you all for your answers and please provide source (s) if possible.