The word "trolleys" is used to refer to a variety of wheeled containers or platforms used for carrying goods or people. Synonyms for trolleys include carts, wagons, carriages, and trams. Carts and wagons are often used to transport goods or heavy items, while carriages are typically used for transportation of people or goods in a regal or grand manner. Trams, on the other hand, are typically used for public transportation in urban areas. Overall, the synonym for trolleys one chooses depends on the specific context in which it is used, as well as the intended connotations and nuances of the language.