This is the 2537th most frequent Russian word.
ресторане
"Ресторане" means "restaurant" (prepositional case).
Here, 'ресторане' is used in the prepositional case to indicate location.
Мы были в ресторане вчера вечером.
We were at the restaurant last evening.
Here, 'ресторане' is used in the prepositional case for describing where an action takes place.
В этом ресторане подают вкусные десерты.
In this restaurant, they serve delicious desserts.
Here, 'ресторане' again is in the prepositional case, showing the workplace or setting.