smoker vs smoking carriage

smoker and smoking carriage both are nouns.

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

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

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

Other synonyms of smoker include smoking car, smoking compartment.

smoker (noun)	smoking carriage (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