The act of making complementary refers to the process of enhancing or combining different elements in a way that produces a harmonious result. There are various synonyms that can be used to describe this process, such as augmenting, supplementing, enhancing, enriching, and completing. Each one of these words captures the idea of adding something to a preexisting concept or idea to make it better or more complete. Making complementary can also be described as blending, harmonizing, balancing, or integrating different parts or aspects of a whole to create a more cohesive and unified final product. Whatever word is used, the main objective is to produce a result that is more effective, efficient, and satisfying.