There are various synonyms for the term "lymphatic duct," which refers to the large vessels that transport lymphatic fluid from the lymphatic system into veins near the neck. One common alternative term is a lymph vessel, which includes any vessel that carries lymph fluid. Another synonym is thoracic duct, which specifically refers to the largest lymphatic duct in the body that drains lymph fluid from the lower body, abdomen, left arm, and left side of the chest. Similarly, the right lymphatic duct refers to the smaller duct that drains lymph fluid from the right side of the chest, right arm, and right side of the head and neck. Other synonyms include lymphatic drainage and lymphatic circulation.