ghosts are real (I have a 6th sence that allows me to 'sence' ghosts in a room)
as for the dark humanoid ghosts (with yellow eyes and are impossibly tall) they are called shaddow ghosts & are usually darker then the darkness around them.
the balls are called orbs and are said to be a ghost choice of form as a human/other object form requires a lot of energy.
for the last question: It is imposible to 'force' a ghost to leave they have to do it of their free will
all my info can be found and supported here > www.ghoststudy.com
(site allowed as I am using it as reference
as for the dark humanoid ghosts (with yellow eyes and are impossibly tall) they are called shaddow ghosts & are usually darker then the darkness around them.
the balls are called orbs and are said to be a ghost choice of form as a human/other object form requires a lot of energy.
for the last question: It is imposible to 'force' a ghost to leave they have to do it of their free will
all my info can be found and supported here > www.ghoststudy.com
(site allowed as I am using it as reference