ÆsirThe Æsir are the gods of the principal pantheon in Old Norse religion and Norse mythology. The second Norse pantheon is the Vanir; these two pantheons waged war against each other, resulting in a unified pantheon. Æsir is the plural of áss, ǫ́ss "god". In genitival compounds, it takes the form ása-, e.g. in Ása-Þórr ("Thor of the Æsir"), besides ás- found in ás-brú "gods' bridge" (the rainbow), ás-garðr, ás-kunnigr "gods' kin", ás-liðar "gods' leader", ás-mogin "gods' might" (especially of Thor), ás-móðr "divine wrath" etc.
ElfAn elf (: elves) is a type of humanoid supernatural being in Germanic folklore. Elves appear especially in North Germanic mythology, being mentioned in the Icelandic Poetic Edda and Snorri Sturluson's Prose Edda. In medieval Germanic-speaking cultures, elves generally seem to have been thought of as beings with magical powers and supernatural beauty, ambivalent towards everyday people and capable of either helping or hindering them. However, the details of these beliefs have varied considerably over time and space and have flourished in both pre-Christian and Christian cultures.