OK, now that the preliminary bits and pieces are out of the way - how does the car work. Basically it goes like this. You put your key in the ignition - which is a good word because it literally ignites a spark in the battery which turns the flywheel which starts the engine moving. Almost all cars currently use what is called a four-stroke combustion cycle to convert petrol into motion. You will sometimes hear cars referred to as a V6 or V8.
Most modern cars have the cylinders arranged either inline or a V shape.
This usually means that the rings are not sealing properly through wear and that oil is being burned along with petrol in the combustion chamber. It can rotate at both ends so that its angle can change as the piston moves and the crankshaft rotates. SUMP - the sump surrounds the crankshaft. It contains some amount of oil which collects in the bottom of the sump. Usually the holes where the spark plugs go into the combustion chamber through the block.