club car vs lounge car

club car and lounge car both are nouns.

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

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

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

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