carload

The compound word 'carload' is a transparent combination of two native English elements. 'Car' traces back to the Latin 'carrus', a term for a wheeled vehicle, which entered English via French. 'Load' originates from the Old English 'lād', which broadly meant a way, course, or something carried. The modern sense of a specific quantity a vehicle can transport emerged clearly in the era of railroads. Thus, 'carload' logically denotes the full carrying capacity—whether of passengers or freight—of a designated vehicle, originally a railroad car.

Structure: car (vehicle) + load (burden) - car: From Middle English 'carre', from Anglo-Norman and Old Northern French, from Latin 'carrus' (two-wheeled wagon, cart). Functions as the base noun denoting a vehicle. - load: From Old English 'lād' (way, journey, conveyance, carrying), from Proto-Germanic 'laidō'. Functions as the base noun denoting a burden or quantity carried.