Why is it that on one hand coal is found in plenty, yet it is scarce while on the other, a rotten vegetable is rare but not scarce?

Explanation

Coal is found in plenty yet it is scarce because its demand is also high. Scarcity means that availability is less than sufficient to satisfy all wants or desires. On the other hand, a rotten vegetable is rare but not scarce because there is no demand or want for a rotten vegetable.
Value: Analytic