Free
On the Freifunk 2004 email list, Malcolm J. Matson makes this comparison ...
Definition of 'Free Network' from http://www.freenetworks.org/
A FreeNetwork is any computer network that allows free local transit, following the guidelines of our peering agreement. By "transit", we refer to information flowing through the network. While most of our members specialize in wireless networking, a FreeNetwork can be built using Ethernet, fiber optics, or any other kind of networking technology. A FreeNetwork is defined by what its users can do with it, rather than the particular technology it is built on.
Definition of "Free Market" from the http://www.iea.org.uk/ (The world's first free-market public policy institute)
The core belief of free-marketeers is that people should be free to do what they want in life as long as they don't harm anyone else. On the whole, society's problems and challenges are best dealt with by people and companies interacting with each other freely without interference from politicians and the State. This means that government action, whether through taxes, regulation or laws, should be kept to a minimum.
Source: http://freifunk.net/mailman/private/fsc04news/2004-September/000123.html (membership required)