+A **non-rival good** is a type of good whose consumption by one person does not diminish its availability for others. Its enjoyment by an additional individual comes at no extra cost, as with a [radio broadcast](/wiki/Radio_Broadcast) or a [digital idea](/wiki/Digital_Idea). This characteristic means its marginal cost for an additional user is essentially zero.
+## See also
+- [Public Good](/wiki/Public_Good)
+- [Rival Good](/wiki/Rival_Good)
+- [Excludability](/wiki/Excludability)
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