While fairway woods can certainly be used off the tee, their design is optimized to hit the ball off the turf on the fairway. This means the sole is flattened much more than a driver's sole so that it can slide over the turf without catching, digging into the dirt, or otherwise hindering your follow through.
The name "fairway woods" is a bit of an anachronism now, as it's rare these days for club manufacturers to use actual wood as the primary clubhead material. Fairway clubheads are far more likely to be made of metal or composite materials, and for this reason some people now refer to them as "metal woods".
The most common fairway wood is the 3 wood, but here at Global Golf, we carry 2 woods all the way through 11 woods (or even higher on occasion).
GlobalGolf.com is also proud to offer a wide variety of used fairway woods, including used 3 woods, used Callaway fairway woods, and a wide variety of fairway woods from the game's leading manufacturers.