The jötnar (anglicized jotunn or jotun, plural jötnar; /ˈjoʊtən/, /ˈjoʊtʊn/, or /ˈjɔːtʊn/; Icelandic: [ˈjœːtʏn]; from Old Norse jǫtunn /ˈjɔtunː/; often glossed as giant or ettin) can be seen throughout Norse mythology. The Jötnar are a mythological race that live in Jötunheimr, one of the nine worlds of Norse cosmology, separated from Midgard, the world of humans. They were banished there by theÆsir who refuse them entry to their world, Asgard. The giants frequently interact with the Æsir, as well as the Vanir. They are usually in opposition to, or in competition with, them but also interact with them in a non-hostile manner. Some Jötnar even intermarry with the Æsir and Vanir. This very complex relationship between these two comparable races develops most notably in the Prose Edda and the Poetic Edda.