Construct
From Guild Wars Wiki
A Construct is a type of creature that is not alive, neither is undead. They are artificial creatures animated to perform a certain task, commanded by another creature or automated. They can even be a wall, a gate or a pillar. They are usually animated by spirits, such as elemental spirits like Djinns in Golems or Human souls in Jade Constructs. The Iron Forgeman is also classified as a construct, although it is treated by the game mechanics as part of the terrain rather than a creature. They do not belong to the same familiy, instead of that, most constructs are elementals, and some of them can have other origins, such as demonic, plant, etc.
Examples of constructs are:
