Opposite

I have found that everything has an opposite
Dark has light
Fear has hope
The Sun has the Moon

Even the simple things
Boy has girl
The fork has the spoon
Buttons has zippers

Everything needs an opposite to work
Fire has water
Heroes have villains
Nerds have cheerleaders

With out its opposite its not as useful
What good is a hero without the villain
Or a boy without a girl
Or the Moon with no Sun