Unclean spirits = fallen angels
Demon = disembodied human being
When Satan fell, he fell with the angels in his domain – both in Heaven and on earth
Satan’s sin contaminated the angels under his command
Demons were the original human beings that lived on the earth before the Luciferic flood
Human beings destroyed in Luciferic Flood = disembodied spirits (demons)
Demons enter and possess humans to feel comfortable
Unclean spirits (fallen angels) fly
Disembodied spirits (demons) walk