貨か物もつ機き関かん車しゃ

Meanings

1

freight locomotive; goods engine

Refers specifically to a locomotive designed to haul freight trains, as opposed to passenger locomotives.

car

機き関かん車しゃ
General term for any locomotive; 貨物機関車 specifies a freight locomotive.
貨か物もつ列れっ車しゃ
Refers to the entire freight train, while 貨物機関車 is specifically the locomotive pulling it.

Compound of 貨物 (freight) and 機関車 (locomotive).