The Hebrew noun ets (עֵץ) means tree, wood, or timber. It appears over 320 times and spans the entire biblical narrative — from the trees of Eden to the wood of the temple and the tree on which Christ was hung (Acts 5:30).
The ets that dominates the biblical story is the tree of the knowledge of good and evil. But the tree motif reverses in the New Testament: Christ hangs on a tree (Galatians 3:13), bearing the curse, and Revelation closes with the tree of life accessible to all who overcome. The wood of the ark, Passover door frames, cedar of the temple — all point to God's restorative purposes through the material world.