What is satisfaction ?

Contentment is an emotional state of satisfaction that can be seen as a mental state, maybe drawn from being at ease in one's situation, body and mind. Colloquially speaking, contentment could be a state of having accepted one's situation and is a milder and more tentative form of happiness.

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Satisfaction is the act of fulfilling a need, desire, or appetite, or the feeling gained from such fulfillment. Satisfaction means you've had enough — in a good way. ... When you graduate from school or get a good job, you have a feeling of satisfaction.

b.) a 3-d model