Definitions

Audio evidence - Recorded sounds, evidence of the paranormal (ex. EVP, disembodied voices)
Visual evidence - Photos or videos that show evidence of the paranormal.
A/V - If you find "A/V" in this blog, it means Audio/Visual evidence.
Orb - Round light anomalies sometimes found in photos and video. Can be dust particles, moisture, pollen, snowflakes, and any number of things. Dust and seasonal studies with your camera can help rule those out so you'll know what can be considered paranormal.
Thermal Imaging - Cameras that show heat signatures.
EVP - Electromagnetic Voice Phenomena; spirit voices captured on recorders, these cannot be heard with the ears at the time of investigation.
Disembodied Voice - Voices, that don't belong to any living persons present, that can be heard with the naked ear during an investigation.