Geometric patterns
Geometric patterns, most typically making use of intersecting straight lines which are rotated to form a radiating star-like pattern, were common in Islamic architecture generally and across Moroccan architecture. These are found in carved stucco and wood decoration, and most notably in zellij mosaic tilework. Other polygon motifs are also found, often in combination with arabesques.
A mashrabiya or mashrabiyya (Arabic: مشربية) is an architectural element which is characteristic of traditional architecture in the Islamic world and beyond. It is a type of projecting oriel window enclosed with carved wood latticework located on the upper floors of a building, sometimes enhanced with stained glass. It was traditionally used to catch wind and for passive cooling. Jars and basins of water could be placed in it to cause evaporative cooling. It is most commonly used on the street side of the building; however, it may also be used internally on the sahn (courtyard) side.
The term mashrabiya is sometimes used of similar lattices elsewhere, for instance in a takhtabush.