You can say that they do, because if you feel some strange things going on in your home, like not wanting to be in a room for a very long time and not feeling comfortable in your own house and or room is not a good sign. Do you feel awakened in the middle of the night with shivers all over your body several times a week? Theres your answer
When you believe in silly things, you tend to see them. Ghosts are not real.
There is no solid evidence that ghosts exist. Those that believe in such things will tell you many things that are signs they are present. Most of them different.
vertical signs generally give instructions or tell you the law. horizontal signs give directions or information
They don't!
Generally no, since most people don't believe in ghosts. But if there were ghosts, they would have to be poltergeists to do this. Most alleged ghosts don't manipulate objects.
At a guess you're talking about road signs. Rectangular signs give information Triangular signs give warnings Circular signs give orders
Like signs give a positive answer. Unlike signs give a negative answer.
Usually a long "Woooooooooooooooooooooooooooooooo" is a pretty solid indicator of ghosts or demons.
If phantasmaphobia is a fear of phantasms or a fear of apparitions, then warning signs would be an unrealistc fear of ghosts, ghost hunting, haunted sites and locations and haunted objects. A person suffering from phantasmaphobia would also likely avoid watching anything dealing with ghosts or ghost hunting.
Cold air, movement, and odd magnetism ( a compass won't work correctly). That is believed by some.
because they are madatory signs
Round signs give orders, normal triangle signs give warnings and rectangular signs give useful information (the background colour of these describes the road by the way).