Convergence refers to the process where different entities or ideas come together to form a unified whole. This can occur in various fields, such as technology, where different devices or platforms integrate to enhance functionality. For example, the merging of telecommunications and computing has led to the rise of smartphones, which combine features of both. Union, on the other hand, is the act of joining two or more distinct groups or organizations to create a single entity. This can be seen in labor unions, where workers band together to negotiate better conditions. In mathematics, the union of sets combines all unique elements from each set, represented by the symbol ∪.