A diner is also a type of restaurant that is very casual. A restuarant is typically fancier than a diner. A cafe is usually small, with only a few tables.

Diner is a person who is eating, typically a customer in a restaurant. Restaurant is a place where people go to eat. A Cafe is just another word for restaurant. :) Hope this helps

Hi the restaurant is a place where people spend a day different by the other....The diners are the persons that eat in a restaurant.....the coffe' is the drink after the lunch or dinner....Often after the caffè I use to take a sweet..... Gaetano

Yes. Thanks!

A quick look on wikipedia (English version) will give you very clear definitions, with pictures. Do a little research if your translator throws up words as synonyms.