diner vs eating house

diner and eating house both are nouns.

Word	Noun	Adjective	Verb	Adverb
diner	Yes	No	No	No
eating house	Yes	No	No	No

As nouns, eating house is a hypernym of diner; that is, eating house is a word with a broader meaning than diner:

Other hypernyms of diner include eatery, eating place, restaurant.

diner (noun)	eating house (noun)
a passenger car where food is served in transit	a building where people go to eat
a restaurant that resembles a dining car
a person eating a meal (especially in a restaurant)