system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:whats the difference between a nuke, an atomic bomb, and a hydrogen bomb?
gpt
The first two are synonyms for all bombs using the energy gained from the fission of uranium or plutonium. A hydrogen bomb is a nuclear bomb, but it additionally uses energy gained from nuclear fusion of deuterium (an isotope of hydrogen) and lithium to increase its power.

Basically all nuclear bombs today are hydrogen bombs, since they have far more bang for the buck - literally.