From Minecraft Wiki
Map may refer to:
The Overworld – the main area (i.e. map) of the game where most elements and natural structures generate.
Map – an item obtained via crafting which provides a limited overview of the surrounding terrain, including a marker to show the player's current position and orientation.
Ocean Explorer Map or
Woodland Explorer Map – items that can help guide a player to an ocean monument or to a woodland mansion, respectively.