The term 'mythology anthology' can be broken down into two crossword solutions: EDDA (4 letters). EDDA is a collection of Old Norse poems and stories from the 13th century. It is an important source for understanding Norse mythology, and it is often referred to as the Prose Edda or the Younger Edda. The Prose Edda was written by Icelandic scholar Snorri Sturluson and contains stories about the gods, giants, and other mythical creatures. The Poetic Edda is a collection of anonymous poems that were likely written in the 10th century. It contains stories about the creation of the world, the adventures of the gods, and the end of the world. Both collections are essential sources for understanding Norse mythology.