Definitions for "public goods"
Goods (and services) from which it is difficult to exclude potential consumers. Consumption is joint and non-rivalrous.
goods that may be enjoyed by any number of people without affecting other peoples' enjoyment. For example, an aesthetic view is a pure public good. No matter how many people enjoy the view, others can also enjoy it.
Goods for which use by one person does not reduce the quantity of the good available for others to use, and for which consumption can not be limited to those who pay for the good.
An exception to the free-market system marked by two characteristics. First,...