Please elaborate on "they" as no comparison can be given otherwise.
Do you mean?: "How is nuclear fusion different from regular nuclear reactors (nuclear fission?)"
How are "what" different from regular nuclear reactors? The question has insufficient information in it to be properly answered. Please restate the question.
Nuclear reactors use nuclear fission.
The breeder reactor produce more fissile fuel than what is consumed while this is not the case for other nuclear reactors.
A breeder reactor generates (in a way) new fuel, sometimes more fuel than it uses, by converting non-fissionable isotopes into fissionable isotopes, through neutron capture.
Nuclear reactors use controlled nuclear fission reactions to generate heat, which is then used to produce steam that drives turbines to generate electricity. The heat is produced in the reactor core where nuclear fuel rods containing uranium or plutonium undergo fission reactions. The reactor's cooling system helps regulate the temperature and prevent overheating.
We use nuclear fission in nuclear reactors to tap nuclear energy.
There are over 400 nuclear reactors around the world.
there are no bad things about the nuclear power reactors
France has 56 nuclear reactors in operation. This makes France one of the countries with the highest reliance on nuclear energy in the world.
for example:uranium as nuclear fuelzirconium for nuclear fuel claddingstainless steel for different structurescadmium for neutron capture
Most nuclear reactors are thermal-neutron reactors. A few fast breeder reactors have been built, but not many.
nuclear reactors that evokes dread