Parlour car and Passenger car

Parlour car noun - A passenger car for day travel; you pay extra fare for individual chairs.

Passenger car and parlour car are semantically related. In some cases you can use "Passenger car" instead a noun phrase "Parlour car".

Passenger car noun - A railcar where passengers ride.

Parlour car and passenger car are semantically related. Sometimes you can replace phrase "Parlour car" with "Passenger car", this phrases are similar.