What's the difference between midnight snack and midnight snack?

I found the difference between midnight snack and midnight snack:

1. Snack is a dinner at night, and snack is a snack at night, with different calories and nutritional values.

2. Snacks are usually eaten after 10, and supper is eaten before 9 o'clock.

3. The midnight snack is greasy and light.

The choice should be based on personal needs.