A goods train is a big choo choo train that carries lots of different things from one place to another.
Just like how you might carry your toys in a backpack when you go on a trip, the goods train carries different things like toys, food, clothes, books, and even big heavy machines.
The train has lots of big cars that attach to each other, like a super long snake. Each car is like a big box that can hold lots of things.
When the train gets to its destination, workers called "train conductors" will help take the things off the train and put them where they need to go, like a store or a warehouse.
The goods train is really important because it helps bring things to people who need them. So next time you see a big choo choo train, you can remember that it might be carrying some of the things you use every day!