However, in Elizabethan England, Shakespeare imagined elves as little people. He apparently considered elves and fairies to be the same race. In Henry IV, Part 1, i. 4, he has Falstaff call Prince Henry, "you starveling, you elfskin!", and in his Midsummer Night's Dream, his elves are almost as small as insects. On the other hand, Edmund Spenser applies elf to full-sized beings in The Faerie Queene.
The Scandinavian elves were of human size, which allowed "normal" human interactions: for example, in Hrlf Kraki's saga, the Danish king Helgi finds an elf-woman on an island and rapes her. Famous men could be elevated to the rank of elves after death, and in one such case, the full-sized smith hero Vlund is called an elf.
The Svartalfar live in Svartalfheim. In some sources they are identified with the dwarfs of Nidavellir, who likewise had a reputation as skilled smiths. In general, however, elves and dwarfs are distinguished in surviving Norse literature.
In the Nordic countries where elves have since become associated with Christmas, elves are clad all in red and have long beards and black boots. On Christmas Eve, one must give the elves a bowl of porridge to keep them from playing pranks. In Iceland, from December 12 until Christmas Eve, thirteen elves called the Yule lads visit homes, a lad each day for 13 days, and play tricks on the children, as well as leaving presents for them.
In Scandinavian folklore, which is a later blend of Norse mythology and elements of Christian mythology, there are several groups of human-like nature spirits than are akin to "elves" in a modern sense. These are called tomtar, vittror, and lvor, and are grouped under the general name of vttar (compare wights).Tolkien is responsible for reviving the older and less-used terms elves, elven, and elvish rather than Edmund Spenser's invented elfs, elfin, and elfish. He probably preferred the word elf over fairy because elf is of Anglo-Saxon origin while fairy entered English from French.Modern fantasy literature has revived the elves as a race distinct from fairies. Fantasy elves are different from Norse elves, but are more akin to that older mythology and to the Irish sdhe than to folktale elves.What remained of the belief in elves in German folklore was that they were mischievous pranksters that could cause disease to cattle and people, and bring bad dreams to sleepers. The German word for nightmare, Albtraum, means "elf dream". The archaic form Albdruck means "elf pressure"; it was believed that nightmares are a result of an elf sitting on the dreamer's chest.
