The term "cofunctioned" refers to two functions that work together in a complementary manner. There are several synonyms that can be used to describe this type of relationship between functions, including "collaborated," "cooperated," "interacted," and "aligned." Other synonyms that might be appropriate include "complemented," "balanced," and "synchronized." All of these words suggest a harmonious relationship between two functions, where each function plays a specific role in achieving a common goal. Whether you are describing the workings of a complex software system or the collaboration between two individuals, these terms can help convey the idea of mutual dependence and support.