It is the actual definition since economist Paul Samuelson coined it in 1954.
Things like public parks and public pools would be classic examples of a "Common resource." Rival and non-excludable.
Classic examples of true public goods would be public radio broadcasting or national defense.
At some point in the past couple decades, people have come to misunderstand the term. Having heard the argument that public goods justify taxation to fund them, they come to believe that anything they like must be a public good.
Things like public parks and public pools would be classic examples of a "Common resource." Rival and non-excludable.
Classic examples of true public goods would be public radio broadcasting or national defense.
At some point in the past couple decades, people have come to misunderstand the term. Having heard the argument that public goods justify taxation to fund them, they come to believe that anything they like must be a public good.