Gadus is a genus of fish that includes several species, including the Atlantic cod. When it comes to synonyms for Gadus, there are a few options. One is the Latin name, which is sometimes used instead of the English term. Another option is simply "cod," which is the most well-known and commonly used name for this fish. Additionally, there are other specific names for different species within the Gadus genus, such as the Pacific cod (Gadus macrocephalus) and the Greenland cod (Gadus ogac). Depending on the context, any of these terms could be used as a synonym for Gadus, though "cod" is likely the most frequently used.