Archipelago (noun)

A large group of islands, especially one consisting of a chain or chains, scattered over a sea or ocean.

Origin:

From italian arcipelago, from latin insula 'island' + greek -pelagos 'sea'.

Examples:

1. The Hawaiian Archipelago is located in the Pacific Ocean.
2. The Galápagos Archipelago is known for its unique and diverse wildlife.
3. The archipelago was formed by volcanic activity and is now a popular tourist destination.
4. The archipelago was used as a base for military operations during the war.
5. The archipelago is home to a variety of cultures and languages, each with its own unique history and traditions.