Shade sources are objects that provide protection from the sun's rays. The most common shade sources are elms (4 letters), PARASOLS (8 letters), and elmtrees (8 letters). Elms are deciduous trees that have a wide canopy of leaves that provide shade. PARASOLS are umbrellas that can be used to block out the sun's rays. Elmtrees are a hybrid of elm and poplar trees that are known for their dense foliage and ability to provide shade.