Ornamental (adjective)

1. Used for or serving as an ornament; decorative.
2. Having or showing a decorative or artistic quality.
3. Having a pleasing appearance and serving a practical purpose.
4. Having a decorative purpose rather than a practical one.
5. Added to beautify or adorn something.

Origin:

Late middle english: from old french ornemental, from ornement "ornament" (see ornament).

Examples:

1. The building's ornamental architecture was beautiful.
2. This flower is ornamental and also edible.
3. The ornamental plants in the garden provided a colorful display.
4. The ornamental design on the vase added a touch of elegance.
5. This ornamental fence serves as a boundary and also adds to the beauty of the landscape.