This is the 608th most frequent Bulgarian word.
болницата
The hospital.
Here, 'болницата' indicates the facility where the mentioned doctors operate, emphasizing its role as a workplace.
Лекарите в болницата работят упорито.
The doctors at the hospital work diligently.
In this case, 'болницата' refers to the specific hospital the speaker visited.
Вчера посетих болницата за преглед.
Yesterday, I visited the hospital for a check-up.
Here, 'болницата' is used as a definite form of the noun meaning 'the hospital', indicating a specific hospital close to the speaker's house.