Quais is a French word that translates to "docks" or "wharfs" in English. There are several synonyms for this word, including "piers," "harbors," "marinas," "landing stages," "berths," and "jetties." All of these words refer to a location where ships can dock and unload cargo or passengers. Quais can also refer to a promenade or walkway along the water, which can be described as a "boardwalk," "esplanade," or "seafront." In summary, there are many words that can be used in place of quais, depending on the specific context and meaning of the word.