Coma is a state of unconsciousness in which the eyes are closed and the patient can't be roused, as if simply asleep.

昏迷是无意识状态，病人眼睛关闭，不能被唤醒，彷佛就是睡著了。

youdao

Patients in a vegetative state are awake, not in a coma, but have no awareness because of severe brain damage.

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The case has highlighted the difficulties doctors face when trying to diagnose the level of consciousness of a patient in a coma-like state.

CNN: Trapped 'coma' man: How was he misdiagnosed?

He was in a coma and receiving treatment Friday at a hospital in Jammu, the winter capital of the northern Indian state of Jammu and Kashmir, according to Mr. Sehgal.

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