2 synonym groups for Railway

suburban train, local train, regional train, metro train, city train, transit train, passenger train, railcar, shuttle train, interurban train, light rail, rapid transit, urban train, suburban rail, commuter rail, local rail, regional rail, metro rail, city rail, transit rail, passenger rail, rail shuttle, shuttle rail, interurban rail, light rail transit, rapid transit rail, urban rail [x]

locomotive, railcar, express, passenger train, freight train, commuter, bullet train, high-speed train, intercity train, subway train, metro train, tram, light rail, monorail, streetcar, trolley, rapid transit, transit train, diesel train, electric train, steam train, heritage train, sleeper train, night train, shuttle train, local train, regional train, long-distance train, cargo train, goods train, rail vehicle, trainset, rail transport, rail service, rail line, rail system, rail network, rail route, rail journey, rail travel, rail conveyance, rail transit, rail carriage, rail coach, rail engine, rail locomotive, rail express, rail commuter [x]