Not all psychics claim to be mediums, and not all mediums claim to be psychic. But then there are people like me, who consider themselves psychic mediums. There’s a little bit of overlap.
Enter, the grey area.
Let me explain.
When I first started practicing reading and working with other people, I primarily used my clairvoyant “seeing” abilities to perceive information from the aura - the energy field of my clients. The aura contains information about your emotional, energetic, and physical self - from all aspects of time. Just as memories are stored in your brain, emotions, events, and circumstances are stored in your energy - but that which you’ve experienced in the past, and what is coming to to you in the future.
I could see the color of your aura, identify and address emotional thought forms, see events from the past still playing out in current time (the kinda stuff you re-live and can feel sad or depressed about), and see different relationships with other people in your life, those that were interacting with your energetic and physical space. Using this information, the information stored in your emotional and energetic memory of the past and the present, I could predict things for the future. Of course, the accuracy of a psychic prediction can vary - but it’s mostly based on using present and past ‘data’ from your behaviors and life pattern, to determine how things will go. And of course, you change your behaviors, thoughts, or patterns, to be different from the past, the future can change, as well.
Psychics use clairaudient (perceptive hearing), clairvoyant (perceptive seeing), clairsentient (perceptive sensing and feeling), and claircognizant (perceptive knowing) information that they PERCEIVE from you, to provide you with a clear and accurate reading. They perceive your Spirit.
Each and everyone of us has at least one of these abilities, as it is part of your intuitive sense. A practicing psychic, has either naturally stronger abilities and/or has practiced their intuitive gifts to be of service to others. Practicing psychic abilities increases skill, much like playing a musical instrument makes you better, as does developing the tools of your intuitive gifts.
On the other hand, a medium, is someone who RECEIVES information from a Divine source, acting as a conduit between this Divine source, and another person. Someone who is a medium has practiced connecting and linking their energy with the Divine, usually an individual being, but not always, to provide you with guidance, information, support, and love that is most helpful to you now.
All mediums use their psychic abilities to interpret this information from the Divine and from Spirit. Thus, all mediums, to some degree, must have psychic abilities and practice using them, as the psychic abilities are the tools that they and those in Spirit use to deliver the message. All mediums are also psychic, but not all psychics are mediums. If a medium, for example, uses their clairaudient abilities to perceive information from clients (humans with Spirit), they are transferring this tool of hearing, to receive information from Spirit, without physical body.
Mediums are simply that - a media acting as a conduit to convey a message between two sources. Depending of the connection of each medium, they may be able to receive information from deceased Loved Ones, Angels, Spirit Guides, Ascended Masters, and the Great Oneness of Source.
All psychics have the ability to learn how to connect with Spirit to begin to RECEIVE information, in addition to using their psychic perception when working with clients. All that is takes is practice, and a shift in focus from the physical world information, to spiritual world information.
Each person, psychic or medium, will have a preference, comfortability, and place where they feel they work best. For example, I have many friends who prefer to use their psychic abilities to perceive with the physical world and the energetic nature with their clients, and are completely comfortable perceiving from themselves and their clients, and not developing receptive abilities from Spirit. Additionally, I, myself can use my psychic abilities to assess how you are doing now, predict future outcomes, and explore your relationships - however, I much prefer to receive information for Spirit and deliver what I receive to you.
Each individual is unique and knows intuitively within themselves, where their focus of their abilities will lie - in perception or reception.
I hope this helps!