Golems are material creature constructs which are made of parts of once living (blood & viscera, plants) anima and natural elements of earth, stone, clay and soil. All golems are imbued with some power from an elemnental Earth spark or fueled by mysterious alchemy. Empowered Mystical Items imbued with motive force are a Golem/Construct.
Complex forms are often seen to take on the outer appearance of a specific creature or being they are meant to reflect.
Crude forms often seem to mimic or emulate Mechanical/Robotic Items.