1- "If anything remains vague, it is only because of the dark cloud which has come over my mind." (Context: He has been questioning for a while. And saying this sentence.)
What does "come over my mind" mean here?
2- Dark clouds have come over the city.
Can I use this sentence? What I mean is that: Dark clouds are above the city right now, we can't see the sky clearly.
I know in the first sentence "coming over" was used metaphorically. In the second sentence I used it literally.
3- She is a nervous flier. But once the plane got over the clouds, she started to relax.
In this sentence, what does "get over" means? To me, "got over something" means like "jumping over the wall". I mean plane is no longer above the cloud, it skipped the cloud by going above it.