There are many terms used in the paranormal investigations and we have listed a few here for you to read over. We suggest the following web site as it has many more terms listed, you can also do a web search to find other term listing that are used by Paranormal Investigators.
Apparition - The visual appearance of a person whose physical body is not present.
DeBunk - to give a logical explanation of something that was thought to be paranormal activity.
Electronic voice phenomenon (EVP) - The capture of ‘spirit’ voices on magnetic tape, magnetic tape as an audio recording. Many times, no sound is heard while the tape is recording. It’s only upon playback that the harsh, hushed voices can be heard.
Orb - A photographed (not seen at time of photo in some cases) anomaly that, in theory, represents an ongoing 'spirit' of a deceased person. It appears as a ball of light and may occasionally seem to be moving. This is a highly controversial subject since there are many reasonable circumstances that identify this as environmental (dust, rain, snow, dirty lens, insects, reflection, lens flare etc.).
Paranormal - Above or outside the natural order of things as presently understood.