They can be whatever you want them to be - make them up for example:
I hope these prove useful to you!
An evil fairy is called a banshee.
the tooth fairy. is what you should call him/her!! if not that is OK.
Fairy Tail the guild is in the town of Magnolia
You don't.
You might call a smelly fairy a "stinkerbell"! It's a playful twist on the classic character Tinkerbell, adding a humorous touch to the idea of a fairy with an unpleasant odor.
it is a dwarf!
A Fairy.
Dor is the city in The Tale of Despereaux.
Absinthe.
Moon Fairy
Um, I would probably call it a Fae. Its another word that just means fairy, but I guess you could use it in that way too.
Stinkerbell