Architectural ornament and Greek key

Architectural ornament noun - (architecture) something added to a building to improve its appearance.

Greek key and architectural ornament are semantically related. In some cases you can replace phrase "Greek key" with "Architectural ornament", this phrases are similar.

Greek key noun - An ornamental pattern consisting of repeated vertical and horizontal lines (often in relief).

Architectural ornament and Greek key are semantically related. You can use "Architectural ornament" instead a noun phrase "Greek key".