A scrim is a very light textile made from cotton, or sometimes flax. Their lightweight and translucence means it is often used for curtains. The fabric can also be used for bookbinding and upholstery. Scrims have also seen extensive use in theatre where they are often used for special effects. In theater a scrim can refer to any such thin screen and are made out of a wide variety of substances.
A transaxle is a complex machine that brings together a transmission and final drive components like a differential. In that way, a transaxle is capable of driving the axles without any additional components.
A transaxle can be found in cars that have a stick shift as well as an automatic transmission. Most front-wheel drive vehicles have a transaxle that combines the transmission -- the system of gears that changes at various driving speeds -- with the drive axle.