This is not always the case, as Doom's Domain was alliterative, despite being collaboration based.Collaboration Locations often do not use alliteration, such as The Daily Bugle or Gotham City.On demotion, some of these have gained alliterative status, such as The Rig becoming Rickety Rig. Many faction specific locations, such as The Citadel, or The Joneses do not use alliteration.However over the seasons and chapters, more and more POIs have stopped following this ruleset for various reasons: Named Locations often follow an alliterative ruleset, meaning the location is two words, each of which start with the same letter, the first word being usually an adjective. They are quite large in size - often resembling towns and cities, and because of this, many Chests and Ammo Boxes can be found in these locations.
Named Locations were introduced on launch of the game, in the Pre-Season. They are named on the map, often using alliteration as their naming convention.
Named Locations are the largest types of locations in Fortnite: Battle Royale.