Good and evil.

Generally, are you sure that good and evil are concepts used to define the world? There is no good and evil; good and evil are evaluations that the mind assigns to something. Good and evil did not exist before humans appeared. Our minds could not understand the world without associations; it wanted to organize everything. That's where these concepts come from.

This applies to the world, but with humans, it's a completely different story: for a person, "good" and "bad" (in relation to another person) are things that have a positive or negative influence on them.