People tend to call any generic magical being a Faerie (usually shortened to Fae), and Faeries is the correct way to refer to a mixed group of aforementioned magical beings. But Fae is just an umbrella term, and in a way really means "a being that isn't mortal."

There are countless types of beings that fall under the Faerie category. Any magical creature you've ever heard of exists somewhere in The Other Lands - and even on Earth, if you know where to look for them! Here's a list of the most commonly known ones:
  • The Sidhe are some of the most powerful Fae, and also the most human-looking. They're taller than most humans, and tend to glow - literally - with power. They've been described as having unearthly beauty, and come with eyes, hair, and skin in all colours of the rainbow, and then some.
  • Dragons are probably the most famous Fae of all. They come in numerous varieties, with numerous traits, but they all seem to like collecting things.
  • Unicorns and Pegasi aren't just pretty, they're completely sentient beings, usually keepers of knowledge of some sort, and they tend to dislike being ridden. And throw out that pretty white idea. They come in a great variety of colours.
  • Merpeople may have the basic head-torso-limbs of a human, but they certainly don't have the same kind of skin that we do; their skin, head to tail, is made of hundreds of thousands of tiny scales. They're a bit more like human-shaped fish, with their tails and webbed fingers, and have particularly large eyes. Sure, they have melodious voices, but they're also ravenous carnivores. And they don't just live in oceans, either. Any natural body of water seems to do them just fine.
  • Vampires. They live off of blood, and can die of starvation. They're weakened by sunlight, but don't burst into flames. If you're hunting one, garlic and wooden stakes won't do you any good, but an item of some sort of power that you can stab them in the heart with can. Because they're technically considered to be undead, turning someone is hard to get past The Fed, regardless of consent.
  • Most werewolves are Lycanthropes: your average human being that becomes a gigantic humanoid wolf-monsters that tend to tear things to shreds during the full moon. They can be made or born, and generally have no control over what they do in their wolf-forms. If you see someone using a talisman or spell to become a wolf (always, it seems, as a larger-than-natural wolf with very human eyes), they're just using some neat magic, and are not considered to be werewolves. If you see a normal looking wolf turn into a human, though, you'd best just call them a Wolf, Capital W. And treat them with respect. These reverse-werewolves tend to be ambassadors from your local Nature, and are probably a lot older than your great-great-great grandparents.
  • Speaking of which, Nature Spirits can take the form of any animal, fish, or bird that you can think of, and can take on a humanoid form at will. You should also treat them with respect, since they're also ambassadors from your local Nature that are probably a lot older than your great-great-great grandparents.
  • Brownies are mischievous little house sprites that tend to do their work while you're asleep. They'll clean your house and find your lost things, or hide your socks and keys and knock over everything smaller than a frying pan - depending on how happy you keep them.

And that's just a start. We haven't even gotten to nymphs, dryads, satyrs, jinn, phoenixes, elves, trolls, pixies, ghosts...

A quick note on Angels and Demons:
Do. Not. EVER. get involved with Angels or Demons. These creatures, who exist in a world entirely separate of both Earth and The Other Lands, are extraordinarily powerful. Not even the most powerful Fae will mess with these guys, and you shouldn't either. Don't let any religious beliefs mislead you: all of these guys are bad news for us mere mortals.