wallpaper

1. Decorative paper-like material used to cover the inner walls of buildings.
2. A roll of such paper.
3. A style or design of such material.

   He is letting her select the wallpapers for the whole house.

4. (sometimes attributive) Anything that serves as a background or part of the surroundings.
5. An image or tiled pattern used as the background of a computer desktop.
6. Generic footage of a building or location that may be used in the background of a related news report.
7. Gaudy mass-produced stamps, typically of little or no value and only produced for sale to collectors.
8. A radio operator's collection of awards and QSL cards.

verb

To cover (a wall, a room, etc) with wallpaper.