nope, chainsaw.
but as far as ghosts go....assuming they exist, and are 'super'natural they have the power to avoid definition documentation.
I mean, if you can believe they exist, you may as well believe they have the power to avoid being documented.
of course if you don't believe in them then all the semi documenting of them is bunk.
so far I haven't seen any way to nail it down any further than that.