Cluster decay is a type of radioactive decay that involves the emission of a small cluster or group of nucleons from the nucleus of an atom. Some synonyms for cluster decay include group decay, packet decay, and multi-particle decay. These terms highlight the fact that multiple particles are emitted during this type of decay, rather than just one. Another synonym that can be used is specific cluster emission, which emphasizes the fact that the cluster that is emitted is a specific combination of nucleons. Understanding these synonyms can allow for clearer communication about this type of decay and its effects on nuclear structures.