Examlex
The celestial sphere is divided into 88 modern constellations.
Nonrival
A good or service that can be consumed by one individual without preventing the consumption of the good by another individual.
Nonexcludable
A characteristic of a public good, indicating that it is not feasible to prevent non-paying customers from consuming the good.
Excludable
An excludable good is one from which it is possible to prevent people from benefiting unless they have paid for it.
Public Good
A good or service offered to every member of a society for free, provided by either the government or a private entity or group, without seeking profit.
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