For those throwing silly words about, like "blower" as though they have some special meaning outside of periodical literature, the following are just two pages among many that are worth reading.
HowStuffWorks "How Superchargers Work"
Supercharger - Wikipedia, the free encyclopedia
"A supercharger is any device that pressurizes the air intake to above atmospheric pressure. Both superchargers and turbochargers do this. In fact, the term "turbocharger" is a shortened version of "turbo-supercharger," its official name.
The difference between the two devices is their source of energy. Turbochargers are powered by the mass-flow of exhaust gases driving a turbine. Superchargers are powered mechanically by belt- or chain-drive from the engine's crankshaft."