This is the 765th most frequent Korean word.
고급
"고급" means "high class," "advanced," or "premium."
In this context, '고급' is used to describe the high-quality or premium nature of the dishes served at the restaurant.
이 식당의 고급 요리는 유명합니다.
The gourmet dishes of this restaurant are famous.
Here, '고급' is employed to indicate that the car is a luxury or high-class vehicle.
그녀는 고급 자동차를 타고 다닙니다.
She drives a luxury car.
In this sentence, '고급' refers to advanced or sophisticated technology suggesting a high level of technical quality.