What does oceania mean?

The term "Oceania" is used to describe a vast geographic region that encompasses the islands of the Pacific Ocean. It includes the continent of Australia, as well as numerous island nations and island groups such as New Zealand, Papua New Guinea, Fiji, Hawaii, and many others. Oceania spans a vast expanse of the Pacific Ocean, stretching from the eastern shores of Asia to the western coast of the Americas. The term is sometimes used interchangeably with the term "Australasia", which encompasses both Oceania and the mainland of Australia.