Can a ghost kill someone?

I once saw a Spirit but I guess some would call it a ghost.
Instead of showing fear or being frightened, I went to grab it and poof it was gone.
Soon after my trip to the bathroom, I went back to sleep.

No, not outright. Think of the consciousness that left the brain upon death as disbursement of energy at a semi molecular level. It takes a lot of that energy banded together to cause an event such as an auditory event or motion, or apparition or other such event.

No it ghost cannot physically kill you. But what they can do is screw with your mind and push you over the edge or they can physically affect your health to where your body starts draining and becomes in poor condition if you are already sick. It's kind of like a battery drain on a car. But no they cannot grab you and choke you to death or throw you off of a cliff or beat you to death. Think about it if they could there would be dead people all over the place from Ghost murders they don't happen

Idk. Can it?

Have you ever seen 'The Entity'?

Drive me mad I suppose

Physically? I doubt it, but they could probable scare someone with a bad heart to death. 🤔

Only mentally/emotionally

Only in movies - ghosts when they may appear,can startle or frighten people,but can do no more than that.