Here are ten useful words for talking about trains and things you'd find on a train in French:

buffet car - le wagon-restaurant
express train - le train rapide
goods train - le train de marchandises
guard - le chef de train
level crossing - le passage à niveau
luggage space - un espace bagages
passenger train - le train de voyageurs
ticket collector - le contrôleur, la contrôleuse
train driver - le conducteur de train, la conductrice
whistle - le sifflet

To practise these words further, please visit:
https://lexicogs.com/french-for-travel-trains/