Yes they are the same. When Satan turned away from God many angels followed him. Satan and his followers were cast out of heaven and to the earth. They promote false doctrines and turn many away from God. The Bible says that Satan is the ruler of the world As you can plainly see by all the horrific things that are happening in the world. Many times demons will appear to humans in the form of a dead person. That reinforces the doctrine of the immortal soul. But it is not the soul or spirit of a dead human people see. It is a demon. Satan told Eve she would not die if she ate of the fruit. God told Eve she would die. So Satan has planted the idea of the immortal soul into people's minds. Many times appearing to humans as a dead loved one. For more info go to www.jw.org
no they are not the same fallen angels are angels that did wrong in heaven like lucifer or known as the devil or satan lucifer was a fallen angel because he thought he was more powerful than God so God threw him out of heaven and into hell. now demonic entities can be a whole number of things as in demons,ghosts,spirits all of those are demonic entities there are a couple more that i cant remember off the top of my head but thats your answer.
They are not the same in a definitive sense. Fallen angels are a concept only in Abrahamic faiths. These fallen angels are considered demons, and the greatest of those fallen angels is Lucifer, Satan, the devil. However, the word demon is from the ancient Greek, and only meant a great spirit, or a deity, until the Abrahamic faiths gave the word it's negative context to describe the fallen. In many cultures, demons are not considered evil. The existence of any of these creatures is for you alone to decide.
You would think that such questions would concern only religious people who have no fear but Hollywood has certainly scared the hell out of non-believers. The Bible is clear about the Aliens who cloak their activity. The Earth is a battle ground where the prize is the mind. Some of the warriors are good some are evil and ideas are where we all make our choices. The destruction of the soul is the ultimate goal of evil so you can't always believe what you hear and sometimes what you see. Things are not always what they seem. Thank goodness for a BOOK that reveals TRUTH
They are different. The fallen angels rebelled against God. They were led by Lucifer, now called Satan. Demons are the disembodied spirits of the children of the fallen angels who mated with human women. On Earth they were called The Nephilim. When they died, mostly in the flood, they became demons. The demons are a little lower than the fallen angels in the hierarchy of Satan's kingdom.