바다

In a sentence

• 바다는 넓고 푸르다.

  The sea is vast and blue.

  Here, '바다' is used as a subject and represents the sea, describing its vastness and color.

• 나는 여름마다 바다에 간다.

  I go to the sea every summer.

  In this sentence, '바다' is used to denote the location where an activity (going) occurs, particularly as a destination.

• 아이들이 바다에서 모래성을 쌓고 놀았다.

  The children built sandcastles and played at the beach.

  Here, '바다' refers to the seaside or beach area as a specific location for the activities described in the sentence.