The term 'TRAIN PART' can refer to several different components of a train. A 'ROOMETTE' is an 8-letter word that refers to a small compartment on a train, usually with two or three beds and a washroom. A 'RAILCAR' is a 7-letter word that is used to describe a vehicle that runs on a railway track, such as a passenger CAR or freight CAR. A 'CAR' is a 3-letter word that is used to describe the same type of vehicle. Finally, a 'RAILWAYCAR' is a 10-letter word that is used to describe a vehicle that runs on a railway track, such as a passenger CAR or freight CAR.