An archipelago (pronounced /ɑrkɨˈpɛləɡoʊ/) is a chain or cluster of islands that are formed tectonically. The word archipelago is directly derived from the Greek arkhon (arkhi-) ("leader") and pelagos ("sea"). In Italian, possibly following a tradition of antiquity, the Archipelago (Greek: Αρχιπέλαγος) was the proper name for the Aegean Sea and, later, usage shifted to refer to the Aegean Islands (since the sea is remarkable for its large number of islands). It is now used to generally refer to any island group or, sometimes, to a sea containing a large number of scattered islands like the Aegean Sea.[1]