Liaises is a common verb used to describe the act of communicating or exchanging information between different individuals or groups. Some common synonyms for liaises include cooperates, collaborates, communicates, interacts, coordinates, and works together. These words convey the action of working together to achieve a common goal or objective. Other synonym options that can also be used include interconnects, links, allies, networks, and joins. All of these words are useful when describing the interaction between two or more entities and emphasize the importance of effective communication and cooperation. Using these synonyms instead of the word liaises can add variety and depth to your writing.