passenger train vs carriage

passenger train and carriage both are nouns.

Word	Noun	Adjective	Verb	Adverb
passenger train	Yes	No	No	No
carriage	Yes	No	No	No

passenger train (noun)	carriage (noun)
a train that carries passengers	a vehicle with wheels drawn by one or more horses
	a railcar where passengers ride
	a machine part that carries something else
	a small vehicle with four wheels in which a baby or child is pushed around
	characteristic way of bearing one's body