dining-room attendant vs restaurant attendant

dining-room attendant and restaurant attendant both are nouns.

Word	Noun	Adjective	Verb	Adverb
dining-room attendant	Yes	No	No	No
restaurant attendant	Yes	No	No	No

As nouns, dining-room attendant and restaurant attendant are synonyms defined as:

dining-room attendant and restaurant attendant: someone employed to provide service in a dining room

dining-room attendant (noun)	restaurant attendant (noun)
someone employed to provide service in a dining room	someone employed to provide service in a dining room