Trematodes are a type of parasitic flatworm that infects various species, including humans. They are commonly referred to as flukes or liver flukes due to their shape and their tendency to inhabit the liver. Other synonyms for trematodes include digenetic trematodes, which refers to their life cycle that involves two hosts, and Clonorchis sinensis, a specific species of liver fluke that is known to cause liver disease. Additionally, some may refer to trematodes as blood flukes or lung flukes depending on their specific location within their host's body. Overall, these synonyms can be useful for those studying parasitology or seeking information on trematode infections.