Smoking car and Smoking room

Smoking car noun - A passenger car for passengers who wish to smoke.

Smoking room and smoking car are semantically related. in compartment for smokers topic. In some cases you can use "Smoking room" instead a noun phrase "Smoking car".

Smoking room noun - Room in a hotel or club set apart for smokers.

Smoking car and smoking room are semantically related. You can use "Smoking car" instead a noun phrase "Smoking room".