What's the difference between a regular GPS system and a GPS receiver?

Is there any difference? I'm thinking about buying my step dad a Garmin StreetPilot庐 c320 GPS Receiver. Is this a regular gps system or not? I'm really not too familiar with these things so your help is GREATLY appreciated.





Thanks!|||GPS is a system of satellites that were put in orbit by the US government with tax payer dollars.





A GPS receiver is a piece of equipment that measures the signals from these satellites and plots your position on Earth.





The StreetPilot is a unit with a built-in GPS receiver, as well as pre-loaded detailed mapping of city streets.





If you're on a tight budget, I recommend looking at the Garmin Nuvi 205, which I've seen for as low as $120. Check out the Black Friday deals at: http://blackfriday.gottadeal.com --%26gt; This site doesn't sell anything, it only lists ads for Black Friday sales.|||one is a self contained gps unit, the other is a add on unit to run with a secondary device like a PDA