Pullman car vs carriage

Pullman car and carriage both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pullman car	Yes	No	No	No
carriage	Yes	No	No	No

As nouns, carriage is a hypernym of Pullman car; that is, carriage is a word with a broader meaning than Pullman car:

Other hypernyms of Pullman car include coach, passenger car.

Pullman car (noun)	carriage (noun)
luxurious passenger car; for day or night travel	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