A nuclear reactor is a type of technology that generates power by harnessing the energy released from radioactive elements. There are several synonyms that can be used to describe a nuclear reactor, including atomic pile, atomic reactor, thermonuclear reactor, and fusion reactor. These synonyms are often used interchangeably to describe the same type of power generation technology. Each of these names reflects certain aspects of the technology, such as the use of atomic energy or fusion processes to generate power. Regardless of the terminology used, nuclear reactors play an important role in meeting the needs of modern energy demand, and they continue to evolve and improve as advances in technology emerge.