A thermonuclear bomb is a devastating weapon that uses the energy from a fusion reaction to cause a massive explosion. While the term thermonuclear bomb is commonly used, there are several synonyms for this destructive device. These include hydrogen bomb, H-bomb, fusion bomb, and atomic fusion bomb. The term H-bomb is often used interchangeably with a thermonuclear bomb since it contains hydrogen in its most basic form, making it a more accurate description. The term fusion bomb and atomic fusion bomb are also synonymous with the thermonuclear bomb due to the mechanism of the explosion, which uses a fusion reaction between hydrogen isotopes. Regardless of the term, these weapons are highly destructive and can cause immense damage if detonated.