There are several synonyms for the word "aircraft carrier." One commonly used term is "carrier," which refers to a large warship designed to transport and launch aircraft. Another synonym is "flat-top," which refers to the carrier's flat flight deck that allows planes to take off and land. "Battleship" is also used as a synonym for aircraft carrier, although battleships are more heavily armed and designed for naval combat. "Aero-naval platform" is a technical synonym that emphasizes the carrier's role as a mobile air base. Finally, "floating airport" is a metaphorical synonym that describes the carrier's ability to support air operations in remote areas without access to traditional airports.