How does the dictionary define 'sadness'?
Before I answer your question, could you define your terms a little more
Your rights and responsibilities are defined in the citizens' charter.
Your role in the project will be strictly defined.
What defines a good wine?
WordNet 3.0 Sense Numbers: 2, 3
NOTE: Sense involves determining the essential quality of something/someone
I'd hate to feel that I was defined by my job.
Your hairstyle doesn't have to define you.
The age we live in is defined by a deep sense of uncertainty.
WordNet 3.0 Sense Numbers: 1
NOTE: Sense involves allowing something to be shown clearly, especially shape or outline
The outline of the castle on the hill was clearly defined against the evening sky.
The camera could define the smallest object.
The tree was clearly defined by the light.
WordNet 3.0 Sense Numbers: 4