Basically its a blanket of heavy hydrogen (deuterium) around a "regular" atomic bomb.
A hydrogen bomb is called so because it mainly relies on the fusion of hydrogen isotopes to release energy. The fusion process is what distinguishes it from an atomic bomb, which relies on nuclear fission.
hydrogen bomb, or a nuclear bomb
If you are asking which has the maximum danger, a hydrogen bomb is one type of nuclear bomb. In general, nuclear bombs can be fission (called atomic) or fusion (hydrogen) A fusion bomb is larger than an fission bomb, and actually uses a fission bomb to start the fusion reaction.
hydrogen bomb, or a nuclear bomb
Nuclear bomb can mean either fission or fusion bomb. Hydrogen bomb means fusion bomb. The fusion bomb can be built with any yield one wants, just by adding more stages with more fuel. The fission bomb has a theoretical maximum yield that cannot be exceeded.
Teller's so called "Classical Super" fusion bomb design of 1945 had excessive radiative heat loss and therefor could not sustain the D-T fusion burn.
There were no nuclear tests in 1950 of either atomic fission or hydrogen fusion bombs.The first hydrogen fusion bomb tests were in 1951 in Operation Greenhouse and none of the devices were an actual hydrogen bomb. "Item" was a prototype tritium gas boosted fission bomb, "George" was a deuterium fusion ignition test with well over 95% of its yield the fission primary, and "Easy" and "Dog" were MK-5 and MK-6 atomic bomb design improvement verification tests.
Hydrogen bomb gets some of its energy from fusion, uranium or plutonium bomb gets all of it from fission. Either can be more powerful, depending on the design. The most powerful bombs built have all been hydrogen bombs.
Detonation of a fusion hydrogen bomb is initiated by the primary fission bomb, which generates high temperatures and pressures needed to trigger fusion reactions in the hydrogen isotopes. The fission bomb compresses and heats the fusion fuel to the point where nuclear fusion reactions can occur, releasing vastly more energy than the fission reaction alone.
In general, a fusion bomb (hydrogen bomb) is more powerful than a fission (atomic) bomb. Fusion bombs use an atomic bomb to begin the fusion reaction.
An Atomic bomb is the detonator for a Hydrogen bomb to create enough heat for the fission - fusion chain reaction.
fission vs fusion