An extremely Large part of today's culture. society, and religion have a lot to do with the religious and culture belief of Old Greeks and Norse mythology.  Even though the similarities are evident, the contrasts of the two of them far out weigh the similarities. Greek concepts and Norse concepts and completely opposite. Greek mythology was created to escape the horrible barbaric world and the realities therefore with in it. Making Greek mythology more "dreamy" and "blissful". Where as Norse mythology is filled with pending doom, and the promise of horror to come.