There are at least six worlds, each being the homeworld of a particular family of beings. By inference, they correspond
to the following place names mentioned elsewhere in the Poetic Edda and Prose Edda:
1. Menn (humans): Manheimr
2. Aesir (gods): Ásaheimr
3. Vanir (gods): Vanaheimr.
4. Jötnar (giants): Jötunheimr.
5. Álfar (elves): Álfheimr
6. Náir (corpses, the other world of the dead): Hel
The homeworld of the Dvergar is missing from the above list. Elsewhere, the poem mentions the Dvergar separately from
the other families of beings. For example, Alvíssmál 14 lists the Dvergar as distinct from the Álf. Moreover the two
place names, Álfheimr and Svartálfaheimr, confirm there are two separate heimar or 'homeworlds', one for each family.
The byname Svartálfar or 'Black Elves' refers to the Dvergar. and likewise Svartálfaheimr or the 'Homeworld of the
Black Elves' is the home of the dwarf Brokkr (Skáldskaparmál 46). Alternatively, the home of the Dvergar is called
Niðavellir or the 'Downward Fields' (Völuspá 37). Thus, these families of beings mentioned in the poem Alvíssmál
are identified with seven of the nine homeworlds.
7. Svartálfar (Dark Elves, Dvergar, Døkkálfar): Svartálfaheimr.
Seven homeworlds for seven families of beings. The last two of the homeworlds are less certain. Usually, the list adds
the primordial realms of the elements of ice and fire, counting them as 'homeworlds'. The place name of the element of
ice, Niflheimr, means the arctic 'Mist Homeworld', suggesting it is one of the Nine 'Homeworlds'.
8. Primordial element of Ice: Niflheimr.
9. Primordial element of Fire: Muspellsheimr.