Fusion powers are synonymous with a variety of terms used to describe a phenomenon where atoms release energy through fusion reactions. There are various synonyms for fusion powers such as nuclear fusion, atomic reaction, thermonuclear energy, fusion explosion, and fusion energy. Nuclear fusion is the process in which atomic nuclei come together to form heavier nuclei resulting in the release of energy. Atomic reaction implies energy being released from reactions between atoms. Thermonuclear energy combines thermal energy with nuclear energy to produce power. Fusion explosion denotes the explosion of energy that results from a fusion reaction. Fusion energy describes the energy released from a fusion reaction that can be harnessed for power generation.