1. Fairy, brownie, elf, sprite are terms for imaginary beings usually less than human size, thought to be helpful or harmful to people. Fairy is the most general name for such beings: a good fairy as a godmother; misadventures caused by an evil fairy. Fairy is also used interchangeably with faerie and sometimes has the plural form fae. While both fairy and faerie have been in use since the 14th or 15th century, the -ae- spelling is resurgent in fantasy writing, and the plural fae is now sometimes used as a singular: the player character is the only one who can permanently kill a fae. Modern fae are often conceived as being larger than traditional folklore fairies, and can have either kind or malicious intentions.
A brownie, by contrast, is a good-natured tiny being who appears usually at night to do household tasks: Perhaps the brownies will come and mow the lawn tonight. Elf suggests a young, mischievous or roguish fairy: That child is a perfect little elf. Sprite suggests a fairy of pleasing appearance, older than an elf, to be admired for ease and lightness of movement; it may, however, be impish or even hostile: a dainty sprite.

Did you mean Faroes?