The Ten Realms
The Ten Realms of Asgardian cosmology are the separate worlds of that dimension supported by Yggdrasill, the World Tree. Although the realms are commonly divided into ten, further subdivisions can be made (i.e. Valhalla is a distinct portion of Asgard). Thanks to the Allspeak, all Asgardians and related races can communicate in all of the languages of the Ten Realms, Earth's dialects, and various alien languages