CAMSHAFT controls the top half of the engine. CRANKSHAFT
   controls the bottom half of the engine. They are connected by a
   TIMING BELT. The TIMING BELT controls the WATER PUMP. It's kept
   in good tension by the TENSIONER. The TIMING BELT keeps the
   VALVES opening and closing IN TIME with the PISTONS moving up
   and down (run by the CRANKSHAFT). *whew*. Now i'm 'getting' what
   all these magic engine part words are all about.