drawing-room car vs carriage

drawing-room car and carriage both are nouns.

Word	Noun	Adjective	Verb	Adverb
drawing-room car	Yes	No	No	No
carriage	Yes	No	No	No

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

drawing-room car: a passenger car for day travel; you pay extra fare for individual chairs
carriage: a railcar where passengers ride

Other hypernyms of drawing-room car include coach, passenger car.

drawing-room car (noun)	carriage (noun)
a passenger car for day travel; you pay extra fare for individual chairs	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