Spiritual communication is the field of knowledge where one is able to receive messages, cues or input from other dimensional beings. This can be done through Clairvoyance (clear seeing), Clairaudience (clear hearing), Clairgustance (clear tasting), Clairsentience (clear feeling) Clairalience (clear smell) and Claircognizance (clear knowing).
Those that are able to tune into these type of frequencies are often given the title of psychic or intuitive. If they take that even further they may be a medium, someone that can see and or contact those that have passed on to the other side. If someone is able to receive messages and speak those messages as they receive them, they would be considered a channel. This is not just for a few people. We can all learn to tune in more to our intuition for guidance from our spirit guides, loved ones and the universal power.