The most important aspect to understand about any Medium is that they are specifically able to communicate with spirits that have departed using their "psychic skills" or Clairs. For instance, if a medium is in the middle of a reading they may receive information through what I call "Heaven Wifi," a connection that cannot be seen, felt or heard, but mediums are a conduit to receive and relay information that can be validated to the reader.
All mediums are also psychics, however not all psychics are mediums! Another big difference is that mediums are usually concerned with providing information about the past or present, as opposed to other types of psychics, who usually concentrate on predicting events in the future.
Probably the most important thing to remember about the word “psychic” is that it covers a whole range of grey areas. Mostly Past, Present & Future versus a medium, who actually connects with the departed to bring validity through interpretation.
All Psychics are gifted with some form of ESP, whether this happens to be predicting the future, contacting the dead or anything else.
It should be remembered that everyone has some level of psychic ability – including you – therefore meaning that we could all be described as psychics in some way. Those who really deserve the name though are those who have refined their skills over time.