Original: The Poetic Edda, also known as SÃ mundar Edda or the Elder Edda, is a collection of Old Norse poems from the Icelandic medieval manuscript Codex Regius ("Royal Book"). Along with the Prose Edda, the Poetic Edda is the most expansive source on Norse mythology.
Simplified: Edda or the plural Eddas or Eddur, including Poetic Edda (or Older Edda) and Prose Edda (or Younger Edda), are two collections of stories about Viking deities.