early 15c., "action of decorating, beautification," from Late Latin decorationem (nominative decoratio), noun of action from past participle stem of decorare (see decorate). Meaning "that which decorates" is from 1670s. As "a badge or medal worn as a mark of honor," it is attested from 1816 (often in plural, decorations).
1. Interior decoration by careful coordination seems to have had its day.
2. The most arresting feature is the painted wall decoration.
3. His genius was not confined to the decoration of buildings.
4. It was a building without any adornment or decoration.
5. He gave Stephanie a free hand in the decoration.