Art installation – A three-dimensional visual artwork usually designed for a specific site or
Wood grain – Visible, directional arrangement of wood fibers, which usually creates a vertical pattern. This growth pattern may be seen on many wooden objects.
Wood knot – An imperfection in wood grain, usually an irregular circle of abnormal wood, which was once the base connection of a branch to a tree trunk.
Conceptual Art – A form of art in which the idea or concept is more important than the finished objected.