A faerie (also fairy, fay, fae; from faery, faerie, “realm of the fays”) is a form of spirit, often described as metaphysical, supernaturalor, preternatural. Faeries resemble various beings of other mythologies, though even folklore that uses the term faerie offers many definitions. Sometimes the term describes any magical creature, including goblins or gnomes: at other times, the term only describes a specific type of more ethereal creature or sprite. I prefer to imagine them as radiances of energy—spirits of nature, if you will.
[The Faerie Courts]
The Winter Court/Unseelie Court has free reign over winter solstice and autumn equinox months, and are strongest during that time. By and by, the fae of this court are sensible, chilled, dark, baleful, and what have you. They are the epitome of winter.