The term 'Norse Saga' refers to a collection of Old Norse literature, including the Edda, which is an anonymous collection of poems from the 13th century. The Edda is composed of two parts: the Poetic Edda and the Prose Edda. The Poetic Edda contains a collection of mythological and heroic poems, while the Prose Edda is a handbook of poetics for skaldic poetry. Together, these works provide a comprehensive overview of Norse mythology and culture.