The difference between Nordic mythology and Greek mythology

I think the difference between Nordic mythology and Greek mythology lies in:

First, the molding time is different.

1, Greek mythology:

Greek mythology was formed in the 8th century BC.

2. Nordic mythology:

Nordic mythology was formed in1~ 2nd century.

Second, the Lord God is different.

1, Greek mythology:

The main gods in Greek mythology are Zeus, Poseidon, Hera and Demeter.

2. Nordic mythology:

The main gods in Norse mythology are Odin, Thor, Loki and Frey.

Third, the world structure is different.

1, Greek mythology:

The world in Greek mythology exists in an oval universe, and the universe is divided into five blocks.

2. Nordic mythology:

The whole universe is supported by the tree of the world, Yuga Delahi.