three-dimensional (3D) – adj. having or appearing to have length, depth and height

affordable – adj. reasonably priced and able to be bought by most people

layer – n. an amount of a substance that covers a surface

concrete – n. a hard substance using in building operations

consumer – n. someone who buys or uses goods or services

construction – n. the work of building homes, offices, bridges, etc.

scratch – v. to act on something