The term 'Part of Oceania' can be broken down into two crossword solutions: Samoa (5 letters) and Melanesia (9 letters). Samoa is an archipelago located in the South Pacific Ocean, east of the Solomon Islands, consisting of two large islands and several smaller ones. It is a sovereign state and a member of the Commonwealth of Nations. Melanesia is a subregion of Oceania, consisting of thousands of islands in the western Pacific Ocean. It includes the countries of Papua New Guinea, the Solomon Islands, Vanuatu, Fiji, and New Caledonia.