smoking carriage vs smoker

smoking carriage and smoker both are nouns.

Word	Noun	Adjective	Verb	Adverb
smoking carriage	Yes	No	No	No
smoker	Yes	No	No	No

As nouns, smoking carriage and smoker are synonyms defined as:

smoking carriage and smoker: a passenger car for passengers who wish to smoke

Other synonyms of smoking carriage include smoking car, smoking compartment.

smoking carriage (noun)	smoker (noun)
a passenger car for passengers who wish to smoke	a passenger car for passengers who wish to smoke
	a party for men only (or one considered suitable for men only)
	a person who smokes tobacco