examples of roofs [5]
Roof: the covering of a building that rests on the frame and protects it from inclement weather.
rotunda roof 
Roof with several triangular sides on a polygonal base.
pavilion roof 
Roof with four triangular sides that form a pyramid.
sloped turret 
Many-sided roof whose slope is steep at the summit and gentle at the base.
helm roof 
Pyramidal or conical roof that usually surmounts a tower or bell tower.