Common Good

Definition

From the Wikipedia at http://en.wikipedia.org/wiki/Common_good

"The common good is a term that can refer to several different concepts. In the popular meaning, the common good describes a specific "good" that is shared and beneficial for all (or most) members of a given community. This is also how the common good is broadly defined in philosophy, ethics, and political science. This concept is increasing in popularity as moral vision for the progressive left in American politics."

Definition in Economics

In economics the term common good is used to refer to a competitive non-excludable good.

See the Wikipedia article at http://en.wikipedia.org/wiki/Common_good_%28economics%29