What are nuclear power reactors and reprocessing plants?

Answer 1

In simple terms:
Nuclear power reactor is an installation where nuclear fuel undergoes nuclear fission process resulting in thermal energy production. this thermal energy is transferred to reactor coolant system. Then the thermal energy converted into mechanical energy through turbines. The mechanical energy is converted to electrical energy through electric generators.

Reprocessing plant is an installation where its feed (or input) is the irradiated nuclear fuel (called used fuel or spent fuel) that is discharged from the nuclear reactor. This fuel after successive mechanical and chemical processes is separated into uranium and plutonium (for reuse again) and radioactive waste to be disposed of using specific techniques according to their physical form and radioactivity level.

Answer 2

Nuclear power reactors are facilities that use controlled nuclear reactions to generate electricity. Reprocessing plants are facilities where spent nuclear fuel is treated to separate useful materials for recycling and to manage waste products. Both are important components of the nuclear fuel cycle.