Agent- A living person who is the focus of poltergeist activity.

Apparition - a spectral image of a person that materializes even though a physical body is not present.

Apport – A physical object that can materialize and appear at will in the presence of a medium.

Amulet - An object that is thought to bring good luck or have the power to protect from ghosts or spirits and ward off evil.
Anomaly - is an event which currently does not have an explanation.

Asport – A physical object that a spirit teleports to another location or makes disappear.

Automatic Writing – This method of obtaining information from disembodied spirits is used by mediums in which the spirit takes control over the medium causing them to translate unconscious information on paper without being aware of the contents.

Autoscopy- Instances where a double of a person is seen at the same time, in two different locations.

Banshee- Death omen spirit that manifest to herald an approaching death.  Banshees are said to be found in Ireland.

Battlefield Hauntings- Battlefields are places where violent and traumatic death occures. Often linked with strong emotions. (See Residual Haunting)

Case Study – An in-depth investigation of an individual subject.

Channeling – In this modern day method of spirit communication, a spirit will pass information directly to a medium or channeler who will then relay the information on to the listener(s).

Clairaudience - The paranormal obtaining of information by hearing sounds or voices.

Control – This is a procedure in paranormal psychology that ensures that the experiment is conducted in a standard fashion so that the results will no be influenced by any extraneous factors.

Collective Apparition - A rare type of sighting in which more than one person sees the same apparition or phenomena.

Crossroads- Crossroads are believed to be doorways to the spirit world. It is also believed that entities lead lost and confused travelers astray.

Crisis Apparition - An apparition in which a person is seen within a few hours of a crisis such as death, accident or sudden illness.

Déjà Vu - An impression or dull familiarity of having seen or experienced something before.

Demon- A fallen angel, said to serve in hell with satan. They are said to be able to possess people or animals. Often poltergeist are thought to be demons.

Demonic Possession - Refers to cases in which a person's body is apparently taken over by demonic personality or entity.

Divining rod - A forked rod (or sometimes a pair of L-shaped rods)

Doppelganger – An exact spirit double or mirror image of a person which is considered to be very negative.

Dowsing - The paranormal detection of underground water or mineral deposits (or lost persons and objects)   

Earthbound – A term referring to a ghost or spirit that was unable to cross over to the other side at the time of death and is therefore stuck on earth.

Ectoplasm – An immaterial or ethereal substance associated with spirit manifestations.

Elemental- an angry or malicious spirit, also referred to as "Earth Spirits." Elementals are considered to be ancient.  

Electronic Voice Phenomenon (EVP) – Voices and sounds from beyond that are captured and recorded on magnetic tape or on digital recording devices.

Extra- A shape or face that appears in a photograph supernaturally and cannot be explained away as fraud, developing flaws or faulty film.

Extra Sensory Perception (ESP) - Communication or perception by means other than the physical senses.

Exorcism - The banishment of an entity or entities i.e. spirits, ghosts and demons that is thought to possess or haunt a location or human being or animal.

Ghost – A generic term for a apparition or supernatural entity which is the visual appearance of a deceased human's spirit soul.

Ghost Hunting – A carefully controlled research project in which various methods and equipment are used. 

Hallucination – The perception of sights and sounds that are not actually present.

Haunting – Reoccurring ghostly phenomena that returns to a location where no one is physically present.

Hellhound / Black Shuck – A spectral death omen in the form of a ghostly dog.

Ignis Fatuus- This phenomenon is thought to be caused be spontaneous combustion of gases emitted by rotting organic matter, food, flesh, ect....

Levitation – To lift or raise a physical object in apparent defiance of gravity.

Life Review – A flashback of a person’s life that is typically associated with near-death experiences.

Magnetometer (EMF, gaussmeter) - An instrument for measuring the magnitude and direction of a magnetic fields.

Materialization – The act of forming something solid from the air. . Medium or Spirit mediums - is an individual who possesses the ability to receive messages from spirits.

Near Death Experience (NDE) – An experience that is reported by people who clinically die, or come close to actual death and are revived.

Orb – A photographed anomaly that some believe to be paranormal.  Orbs still remain a highly controversial subject.

Paranormal – Something that is beyond the range of normal human experience or scientific explanation.

Parapsychology - The study of the evidence for psychological phenomena that are inexplicable by science.

Phantom - Something that is seen, heard, or sensed, but has no physical reality (See Ghost).

Phantom hitchhikers- Beings seen on the side of the road at night who are either hit or simply disappear. 

Phantom Scenery or "Time slip"- Instances in which a witness finds before them a scene that seems to be out of a different time, This thought to be a mass apparition or a window into the past.

Poltergeist - German word meaning Noisy Ghost. It is also believed to be a non-human spirit entity which is more malicious and destructive than ghosts of dead human beings. 

Psychic - A person who is responsive to psychic forces with above average ESP abilities.

Reciprocal Apparition - An extremely rare type of spirit phenomenon in which both the agent and percipient are able to see and respond to each other.

Residual Haunting- The occuation of building by spirits of deseased humans who may have lived there.  

Shadow People- This phenomenon is believed to be a way that entities manifest themselves as a human silhouettes. They can also appear as a black blob or a black columns of smoke.

Shaman – A member of tribal societies who acts as a medium between the visible world and an invisible spirit world.

- A paranormal characteristic of a person, who also may be a "psychic," who has psychic powers, but has not the ability to communicate with the dead.

Simulcra – This is a word used to describe the seeing of faces, figures and images in ordinary, everyday object such as rocks, foliage, etc.

Specter – A ghostly apparition; a phantom (See Ghost)

Spirit- The inner being of a human, the soul.  

Spiritualism - The belief system that the dead are able to communicate with the living, through an intermediary or medium.

Stigmata – Unexplained bodily marks, sores, or sensations of pain corresponding in location to the crucifixion wounds of Christ.

Subjective Apparitions – Hallucinations of apparitions or other phenomena that are created by our own minds.

Supernatural - Of or relating to existence outside the natural world.

Urban Legend- A story that contains strange, but supposedly real events.Vortex – An anomaly that appears as a funnel or rope-like image in photographs.

Will-o-Wisps- These anomalies are often seen over swamps and marshes. They are non-discript shapes of amorphus gaseous light, usally explained as optical illusions

White Noise – An Acoustical or electrical noise of which the intensity is the same at all frequencies within a given band.