A maze is a complex system of passages or paths between walls or hedges and is designed to confuse people who try to find their way through it, often as a form of amusement.

A maze of streets, rooms, or tunnels is a large number of them that are connected in a complicated way, so that it is difficult to find your way through them.

You can refer to a set of ideas, topics, or rules as a maze when a large number of them are related to each other in a complicated way that makes them difficult to understand.