Degradation (noun)

1. The process or fact of deteriorating or declining in quality or value.
2. The action or process of reducing the value or status of something or someone.
3. The breaking down of a substance or material into simpler or more basic components.

Origin:

Mid 17th century: from french dégradation, from dégrader "to degrade", from de- (expressing reversal) + gradus "step".

Examples:

1. The degradation of the city's infrastructure was a major concern for residents.
2. The degradation of the river due to industrial waste was a major environmental issue.
3. Her promotion was a sign of recognition for her hard work, not a degradation of her role.
4. The degradation of the metal in the presence of moisture caused it to rust.
5. The degradation of the soil due to overuse led to a decline in crop yields.