The term Celtic Island is used to refer to a group of islands in the North Atlantic Ocean that are home to the Celtic culture. These islands include AVALON, which is a legendary island featured in the Arthurian legend; ERIN, which is an old name for Ireland; Iona, which is a small island off the west coast of Scotland; DRUID, which is an ancient Celtic religion; and ERSE, which is another name for the Irish language.