Faekin is somebody who thinks they are part Faery or their soul is. They are not the same things. I see and communicate with Fae. Faeries are made up of energy, just like a Spirit of a person who died, Fae are a spirit, a Nature Spirit
Deadly as others mentioned, "faekin" does not exist. It's just fantasy. What you probably didn't undertand is that they have subtypes. Well, Fairy is an entity type, but there are sub-types, which means different categories of Fairies. For instance, cats. Cat is a type of animal on earth, but there are many different kind of cats (sub-types), either they'll be with longer tail, either with longer ears, etc.