cabin car vs caboose

cabin car and caboose both are nouns.

Word	Noun	Adjective	Verb	Adverb
cabin car	Yes	No	No	No
caboose	Yes	No	No	No

As nouns, cabin car and caboose are synonyms defined as:

cabin car and caboose: a car on a freight train for use of the train crew; usually the last car on the train

cabin car (noun)	caboose (noun)
a car on a freight train for use of the train crew; usually the last car on the train	a car on a freight train for use of the train crew; usually the last car on the train
	the area for food preparation on a ship