Asgard is the home to the Gods of Norse Mythology. Their tribe is called the Æsirs. The Gods that reside here are Odin, Thor, Loki, Badlr, etc. The word Asgard comes from a combination of two words from the old Norse language, “Ass”, which means God, and “Garðr”, which means enclosure.
Álfheim is the realm where all the elves reside. If you are wondering where you have heard the name of this realm before, it is mentioned in the Marvel Cinematic Universe film ‘Thor: The Dark World’. The people who inhabit this world are demigods.
Hel is the realm in Norse mythology where people who die of sickness and old age reside. It is said to be ruled by Hel or Hela, the goddess of death.
Jotunheim is the realm where the untamed creatures reside. It consists of beings that are magical, mystical, and consist of chaos and wildness. It is divided by Asgard by the river Iving, which never freezes.
Midgard is simply the Earth. It is the realm where human beings reside. The first people of Midgard are Ask and Embla, from where the other human beings came into living.
Muspelheim is the realm of fire. This is the realm where the huge fire giant Surtr. It is said that he would emerge from the realm at Ragnarok, to destroy Asgard and the Gods.
The word Nidavellir means “Low Fields” or “Dark Fields” and the word Svartalfheim means “the homeland of the black elves”. This is the realm where the dwarves and the elves reside.
It is the oldest of the realms in the Norse Mythology. It is the realm of ice and snow and cold. Niflheim is also empty, with no creatures residing in it, not even the Frost Giants, that like the cold. Odin supposedly threw Hela out of Asgard to Niflheim, from where she proceeded to go to Hel.
Vanaheim is the realm where Vanir, the Gods of fertility, reside. They are the other family of the Norse mythology, apart from Odin’s.