lounge car vs club car

lounge car and club car both are nouns.

Word	Noun	Adjective	Verb	Adverb
lounge car	Yes	No	No	No
club car	Yes	No	No	No

As nouns, lounge car and club car are synonyms defined as:

lounge car and club car: railroad car having a bar and tables and lounge chairs

lounge car (noun)	club car (noun)
railroad car having a bar and tables and lounge chairs	railroad car having a bar and tables and lounge chairs