regular train; local train; train that stops at every station
up-train; train heading toward the starting point of its route
special train; extra train
down-train; train heading toward the ending point of its route
very fast train; bullet train
heritage railway train (typically running on a scenic tramway previously used for logging or mining); sightseeing train
Imperial train; royal train
through train; direct train
automatic train stop; ATS
automatic train control; ATC
"multilayer" train; single train formed by joining one or more trains having a different origin or destination
train telephone; railway radiotelephone
vactrain; vacuum tube train
railway gun; railroad gun; railway artillery
sleeper car; decommissioned passenger car used for accommodation; passenger cars opened as overnight accommodation for passengers unable to travel due to transport disruptions, etc.