What's the difference between...

... A Nuclear bomb, a Hydrogen bomb, and an Atom bomb. Or are they just the same thing?

Just curious, so I'm not trying to blow the world up or something.

The term atom bomb is not so commonly used these days but it describes the same thing as nuclear bomb.

Mater can be converted to energy and the destruction of mater can release immense amounts of energy.

Two ways mater is converted to energy is nuclear fission where large atoms are split and some of the mass is lost and converted to energy and nuclear fusion where small atoms are fueed which also causes a loss of mass where some mass is converted to energy.

Nuclear bombs use a rapid cascade of nuclear fission where the energy from each large atom being split causes other atoms to split.

A hydrogen bomb harnesses the energy from a nuclear fission bomb to cause nuclear fusion in small atoms that are also in the bomb. Hydrogen bombs use both nuclear fission and fusion. Hydrogen bombs are also more powerful than bombs that only use nuclear fission like those the US dropped on Japan in WWII.

they just the same thing?

WELL, THEY ALL GO KABOOM!!! LOLZ BUT YES THEY'RE DIFFERENT, THE H-BOMB IS STRONGER THAN THE A-BOMB I FORGOT WHAT ELSE you WROTE LOLZ=]