There are several synonyms for the term "lymphatic trunk," which refers to a large lymphatic vessel that is formed by the convergence of smaller lymphatic vessels. Some of the synonyms for lymphatic trunk include lymphatic duct, lymph duct, thoracic duct, and right lymphatic duct. The thoracic duct is the largest lymphatic vessel in the human body, and it is responsible for draining lymph from the lower and upper extremities, as well as the abdomen and thorax. The right lymphatic duct, on the other hand, is responsible for draining lymph from the right side of the head, neck, and upper extremity. Both of these trunks are vital for the proper functioning of the lymphatic system.