This page deals with slang terms for a Zombie apocalypse, in the heat of the moment it's easy to garble in horror at the situation and important messages are lost so easy terms are introduced by the military which are inevitably adopted and mutated by civilians.
In art, an underpainting is an initial layer of paint applied to a ground, which serves as a base for subsequent layers of paint. Underpaintings are often monochromatic and help to define colour values for later painting.
Underdog: Synthetic products aim to challenge felt as the most popular roofing underlayment. By Victoria Markovitz. They're slippery, they tear, and they're expensive. LAY IT ON ME: DuPont RoofLiner features enhanced durability and tear resistance, protects against leaks, has a Class A fire rating, and carries a limited 30-year warranty.