Object aggregation refers to the process of combining multiple objects into a single object. There are several synonyms for this term, including object composition, object grouping, and object merging. Object composition emphasizes the creation of a new object by combining smaller objects. Object grouping, on the other hand, focuses on organizing objects into a related category. Object merging emphasizes the act of bringing multiple objects together to form a cohesive whole. Other synonyms for object aggregation include object fusion, object consolidation, and object assembly. Regardless of the term used, object aggregation plays a crucial role in software development, allowing developers to create complex, interconnected systems from smaller, simpler parts.