passenger vehicle(n = noun.artifact) autobus, bus, charabanc, coach, double-decker, jitney, motorbus, motorcoach, omnibus - a vehicle carrying many passengers; used for public transport; "he always rode the bus to work"
is a kind of public transport
has parts: roof, window
is a member of fleet
has particulars: minibus, school bus, trackless trolley, trolley coach, trolleybus

amphibious vehicle, armored combat vehicle, armored vehicle, armoured combat vehicle, armoured vehicle, automotive vehicle, horse-drawn vehicle, military vehicle, motor vehicle, passenger, passenger car, passenger mile, passenger mileage, passenger pigeon, passenger ship, passenger train, passenger van, reconnaissance vehicle, recreational vehicle, self-propelled vehicle, space vehicle, sport utility vehicle, test instrument vehicle, tracked vehicle, vehicle, vehicle traffic, wheeled vehicle