The main purpose of mediumship is to provide evidence that can be proof of survival to the recipient.  

Mediumship is a means of enabling people in the spirit world, to communicate with us, thus enabling us to gain an understanding that the spirit of every person survives physical death.

This is when Medium can see our loved one, external to themself via their extrasensory perception.   Mediums who have the faculty of clairvoyance are able to accurately desciribe a communicator .

Is the most common form of mediumship, often called clairknowing. With this form of mental mediumship the medium 'feels' how their communicator looked,  their emotions, how they behavied - the personality. Sensations and colours, can be conveyed via the medium from the communicator.

Clairsentience is what we are using when we have a 'gut feeling' that proves to be right.

This is when we hear words, sounds or music in our own mind's voice. On rare occasions, spirit may be able to create audible sound, though this takes a tremendous amount of focused energy. Names are ususaly conveyed clairaudiently.

This is being able to smell odors that don't have any kind of physical source. Instances of this could include smelling the perfume or the cigarette smoke of a deceased relative, used as a sign of their presence around us. When our sense of smell is strong and distinct, we may find an affinity with flower sentience. 

This is the ability to taste something that isn't actually there. This experience oftentimes comes  out of the blue when a deceased loved one is attempting to communicate a memory or association we have with a particular food or beverage that reminds us of them. 

Auras are described as unseen field of energy surrounding a person's physical body. They're affected by our mood and emotional state, and even others. Colours and indeed their hues are associated with different qualities and emotions.

Someone's aura is usually a combination of colours, with one being more dominant than the others. And while your aura can constantly shift and change, many people will have one colour that is prominent. 

Psychometry is a psychic ability in which a person can sense or "read" the history of an object by touching or holding it. This sensory preseption is not spirit connection, but a psychic ability.