Both mean beach, seaside, or coast, but there’s a subtle difference: if the beach is big and sandy with people on it, 해변 is the natural choice. For other coast towns, you’ll need 바닷가.
해변

바닷가

Both mean beach, seaside, or coast, but there’s a subtle difference: if the beach is big and sandy with people on it, 해변 is the natural choice. For other coast towns, you’ll need 바닷가.